:root {
            --primary: #0052d9;
            --primary-light: #e3ecff;
            --secondary: #7000ff;
            --accent: #00f2fe;
            --dark: #0f172a;
            --gray-dark: #1f2937;
            --gray-light: #f8fafd;
            --border-color: #e5e7eb;
            --max-width: 1200px;
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans CJK SC", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            font-family: var(--font-family);
            color: var(--gray-dark);
            background-color: var(--gray-light);
            line-height: 1.6;
        }

        body {
            overflow-x: hidden;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.3s;
        }

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

        /* 顶部导航 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            transition: all 0.3s ease;
        }

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

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

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

        .logo-text {
            font-size: 20px;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

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

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

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

        .nav-btn {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff !important;
            padding: 8px 18px;
            border-radius: 20px;
            font-weight: bold;
            box-shadow: 0 4px 10px rgba(0, 82, 217, 0.2);
            transition: all 0.3s ease;
        }

        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 15px rgba(0, 82, 217, 0.3);
        }

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

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

        /* Hero 首屏 (无图设计，极致鲜亮) */
        .hero {
            padding-top: 140px;
            padding-bottom: 80px;
            background: radial-gradient(circle at 80% 20%, rgba(0, 242, 254, 0.15), transparent 40%),
                        radial-gradient(circle at 10% 80%, rgba(112, 0, 255, 0.1), transparent 50%),
                        #ffffff;
            position: relative;
            text-align: center;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background-color: var(--primary-light);
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            border-radius: 30px;
            margin-bottom: 24px;
            animation: pulse 2s infinite;
        }

        h1.hero-title {
            font-size: clamp(28px, 5vw, 44px);
            font-weight: 800;
            color: var(--dark);
            line-height: 1.25;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }

        h1.hero-title span {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: clamp(16px, 2.5vw, 18px);
            color: var(--gray-dark);
            max-width: 800px;
            margin: 0 auto 36px;
            opacity: 0.9;
        }

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

        .btn {
            display: inline-block;
            padding: 14px 28px;
            font-size: 16px;
            font-weight: 600;
            border-radius: 30px;
            transition: all 0.3s ease;
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            box-shadow: 0 8px 20px rgba(112, 0, 255, 0.25);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 28px rgba(112, 0, 255, 0.35);
            color: #fff;
        }

        .btn-secondary {
            background-color: #fff;
            color: var(--dark);
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
        }

        .btn-secondary:hover {
            background-color: var(--gray-light);
            transform: translateY(-3px);
        }

        /* 核心版块统一样式 */
        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
        }

        section:nth-child(even) {
            background-color: #ffffff;
        }

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

        .section-tag {
            font-size: 13px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--secondary);
            margin-bottom: 10px;
            display: block;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--dark);
        }

        .section-subtitle {
            font-size: 16px;
            color: #666;
            margin-top: 10px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
            margin-top: -40px;
            position: relative;
            z-index: 10;
        }

        .stat-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 30px 20px;
            text-align: center;
            box-shadow: 0 10px 30px rgba(0,0,0,0.02);
            transition: transform 0.3s;
        }

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

        .stat-num {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary);
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 5px;
        }

        .stat-label {
            font-size: 14px;
            color: #666;
            font-weight: 500;
        }

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

        .about-text h3 {
            font-size: 24px;
            margin-bottom: 15px;
            color: var(--dark);
        }

        .about-text p {
            color: #555;
            margin-bottom: 20px;
            font-size: 15px;
        }

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

        .about-features li {
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 15px;
            font-weight: 500;
        }

        .about-features li::before {
            content: "✓";
            color: #10b981;
            font-weight: bold;
            background: #ecfdf5;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
        }

        .about-visual {
            background: linear-gradient(135deg, var(--primary-light), rgba(112, 0, 255, 0.1));
            border-radius: 24px;
            padding: 40px;
            display: flex;
            flex-direction: column;
            gap: 20px;
            border: 1px dashed var(--primary);
        }

        .badge-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .badge-item {
            background: #ffffff;
            border: 1px solid var(--border-color);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
        }

        /* 全平台AIGC服务 (模型标签云) */
        .model-cloud {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
            max-width: 900px;
            margin: 0 auto;
        }

        .model-tag {
            padding: 8px 18px;
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
            color: var(--dark);
            transition: all 0.2s;
            cursor: default;
        }

        .model-tag:hover {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            border-color: transparent;
            transform: scale(1.05);
        }

        /* 一站式AIGC制作 & 全行业解决方案 */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
        }

        .show-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 20px;
            padding: 30px;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .show-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 30px rgba(0,0,0,0.06);
            border-color: var(--primary);
        }

        .show-card .icon {
            width: 50px;
            height: 50px;
            border-radius: 12px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 20px;
            font-weight: bold;
        }

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

        .show-card p {
            color: #666;
            font-size: 14px;
        }

        /* 全国服务网络 (时间线/分布) */
        .network-timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
            padding-left: 30px;
            border-left: 2px solid var(--primary-light);
        }

        .timeline-item {
            position: relative;
            margin-bottom: 40px;
        }

        .timeline-item::before {
            content: "";
            position: absolute;
            left: -37px;
            top: 5px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--primary);
            border: 4px solid #fff;
            box-shadow: 0 0 0 4px var(--primary-light);
        }

        .timeline-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--dark);
        }

        .timeline-desc {
            font-size: 14px;
            color: #666;
        }

        /* 标准化流程 & 技术标准 */
        .steps-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
        }

        .step-item {
            text-align: center;
            position: relative;
        }

        .step-num {
            width: 45px;
            height: 45px;
            border-radius: 50%;
            background: var(--secondary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            margin: 0 auto 15px;
        }

        .step-title {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .step-desc {
            font-size: 13px;
            color: #666;
        }

        /* 案例展示区 */
        .case-gallery {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 25px;
        }

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

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

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

        .case-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s;
        }

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

        .case-body {
            padding: 20px;
        }

        .case-tag {
            font-size: 12px;
            color: var(--primary);
            font-weight: bold;
            margin-bottom: 8px;
            display: inline-block;
        }

        .case-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--dark);
        }

        .case-desc {
            font-size: 14px;
            color: #666;
        }

        /* 对比评测表格 */
        .table-responsive {
            overflow-x: auto;
            background: #ffffff;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            box-shadow: 0 10px 30px rgba(0,0,0,0.02);
        }

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

        .compare-table th, .compare-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-color);
            font-size: 14px;
        }

        .compare-table th {
            background-color: var(--primary-light);
            color: var(--dark);
            font-weight: 700;
        }

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

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

        .text-center {
            text-align: center;
        }

        .rating-box {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            padding: 20px;
            border-radius: 16px;
            text-align: center;
            max-width: 300px;
            margin: 30px auto 0;
            box-shadow: 0 8px 20px rgba(112,0,255,0.15);
        }

        .rating-score {
            font-size: 48px;
            font-weight: 800;
            line-height: 1;
            margin-bottom: 5px;
        }

        .rating-stars {
            color: #ffb800;
            font-size: 18px;
            margin-bottom: 5px;
        }

        /* Token 比价 */
        .token-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 15px;
        }

        .token-card {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 20px;
            text-align: center;
        }

        .token-name {
            font-weight: 700;
            font-size: 16px;
            margin-bottom: 8px;
        }

        .token-price {
            font-size: 20px;
            font-weight: 800;
            color: #10b981;
            margin-bottom: 4px;
        }

        .token-unit {
            font-size: 12px;
            color: #999;
        }

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

        .train-box {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 20px;
            padding: 30px;
        }

        .train-title {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--dark);
            border-left: 4px solid var(--primary);
            padding-left: 12px;
        }

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

        .train-list li {
            padding: 12px 0;
            border-bottom: 1px dashed var(--border-color);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .train-list li:last-child {
            border-bottom: none;
        }

        .train-tag {
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: bold;
        }

        /* 帮助中心与自助排查 */
        .help-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }

        .help-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 24px;
        }

        .help-card h4 {
            font-size: 16px;
            margin-bottom: 10px;
            color: var(--dark);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .help-card p {
            font-size: 14px;
            color: #666;
        }

        /* FAQ折叠面板 */
        .faq-list {
            max-width: 900px;
            margin: 0 auto;
        }

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

        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 15px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            user-select: none;
            color: var(--dark);
        }

        .faq-question::after {
            content: "+";
            font-size: 20px;
            color: var(--primary);
            transition: transform 0.3s;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background-color: #fafbfc;
        }

        .faq-answer-inner {
            padding: 20px 24px;
            font-size: 14px;
            color: #555;
            border-top: 1px solid var(--border-color);
        }

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

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

        /* 客户评论卡片 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
        }

        .review-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 24px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.01);
        }

        .review-text {
            font-size: 14px;
            color: #555;
            font-style: italic;
            margin-bottom: 15px;
            line-height: 1.6;
        }

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

        .user-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 14px;
        }

        .user-info h5 {
            font-size: 14px;
            font-weight: 700;
            color: var(--dark);
        }

        .user-info span {
            font-size: 12px;
            color: #888;
        }

        /* 智能需求表单 */
        .form-wrap {
            max-width: 650px;
            margin: 0 auto;
            background: #ffffff;
            border: 1px solid var(--border-color);
            padding: 40px;
            border-radius: 24px;
            box-shadow: 0 15px 40px rgba(0,0,0,0.03);
        }

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

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

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

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            background-color: #fff;
            box-shadow: 0 0 0 3px var(--primary-light);
        }

        select.form-control {
            appearance: none;
            background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23333' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'>");
            background-repeat: no-repeat;
            background-position: right 12px center;
            background-size: 16px;
        }

        .btn-submit {
            width: 100%;
            padding: 14px;
            font-size: 16px;
            font-weight: 700;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 12px rgba(0, 82, 217, 0.2);
            transition: all 0.3s;
        }

        .btn-submit:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(0, 82, 217, 0.3);
        }

        /* 资讯与知识库 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
        }

        .news-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 24px;
            transition: all 0.3s;
        }

        .news-card:hover {
            border-color: var(--primary);
            transform: translateY(-3px);
        }

        .news-date {
            font-size: 12px;
            color: #888;
            margin-bottom: 8px;
            display: block;
        }

        .news-title {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .news-title a {
            color: var(--dark);
        }

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

        /* 联系我们与加盟代理 */
        .contact-wrap {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
        }

        .contact-info {
            background: #ffffff;
            border: 1px solid var(--border-color);
            padding: 40px;
            border-radius: 24px;
        }

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

        .contact-item {
            padding: 20px;
            border-radius: 12px;
            background-color: var(--gray-light);
        }

        .contact-label {
            font-size: 12px;
            color: #888;
            text-transform: uppercase;
            font-weight: bold;
        }

        .contact-val {
            font-size: 15px;
            font-weight: 700;
            color: var(--dark);
            margin-top: 4px;
        }

        .contact-qr {
            background: linear-gradient(135deg, var(--primary-light), rgba(112,0,255,0.05));
            border-radius: 24px;
            padding: 40px;
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--border-color);
        }

        .qr-box {
            background: #fff;
            padding: 15px;
            border-radius: 16px;
            box-shadow: 0 8px 25px rgba(0,0,0,0.05);
            margin-bottom: 15px;
            width: 180px;
            height: 180px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .qr-box img {
            max-width: 100%;
            height: auto;
            border-radius: 8px;
        }

        /* 页脚 */
        footer {
            background-color: var(--dark);
            color: #a0aec0;
            padding: 60px 0 30px;
            font-size: 14px;
            border-top: none;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid #2d3748;
        }

        .footer-logo-area h4 {
            color: #fff;
            font-size: 20px;
            margin-bottom: 15px;
        }

        .footer-links-area h5 {
            color: #fff;
            font-size: 15px;
            margin-bottom: 15px;
        }

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

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

        .footer-links-list a {
            color: #a0aec0;
        }

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

        .footer-bottom {
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }

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

        .friend-links a {
            color: #718096;
            font-size: 13px;
        }

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

        /* 悬浮工具栏 */
        .float-tools {
            position: fixed;
            right: 20px;
            bottom: 30px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            z-index: 999;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: #fff;
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--dark);
            cursor: pointer;
            transition: all 0.3s;
            position: relative;
        }

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

        .float-btn .tooltip {
            position: absolute;
            right: 60px;
            background: var(--dark);
            color: #fff;
            padding: 8px 12px;
            border-radius: 6px;
            font-size: 12px;
            white-space: nowrap;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s;
        }

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

        .float-btn .tooltip img {
            width: 120px;
            height: 120px;
            display: block;
            margin-top: 5px;
        }

        /* 移动端适配 */
        @media (max-width: 992px) {
            .menu-toggle {
                display: flex;
            }

            .nav-links {
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: #fff;
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: 0 10px 20px rgba(0,0,0,0.05);
                display: none;
            }

            .nav-links.active {
                display: flex;
            }

            .about-wrap, .train-grid, .contact-wrap {
                grid-template-columns: 1fr;
            }

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

        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.05); }
            100% { transform: scale(1); }
        }