/* 艳红热烈风 - 基础视觉规范 */
        :root {
            --primary: #E60012;       /* 艳红 */
            --primary-hover: #C80010; /* 深艳红 */
            --primary-light: #FFF0F1; /* 极淡红背景 */
            --text-main: #1A1A1A;     /* 深黑正文 */
            --text-muted: #666666;    /* 灰字 */
            --bg-light: #F9FAFB;      /* 全局浅灰底 */
            --border-color: #EAEAEA;  /* 边框线 */
            --white: #FFFFFF;
            --shadow-sm: 0 2px 8px rgba(230,0,18,0.06);
            --shadow-md: 0 8px 24px rgba(230,0,18,0.08);
            --shadow-lg: 0 16px 40px rgba(230,0,18,0.12);
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", sans-serif;
        }

        /* 基础重置 */
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: var(--font-family);
            color: var(--text-main);
            background-color: var(--bg-light);
            line-height: 1.6;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--text-main);
            text-decoration: none;
            transition: all 0.3s ease;
        }
        a:hover {
            color: var(--primary);
        }
        ul {
            list-style: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        /* 布局容器 */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .section-padding {
            padding: 80px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }
        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-main);
            position: relative;
            display: inline-block;
            padding-bottom: 12px;
        }
        .section-header h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background-color: var(--primary);
            border-radius: 2px;
        }
        .section-header p {
            margin-top: 15px;
            color: var(--text-muted);
            font-size: 16px;
        }

        /* 导航栏 */
        .navbar {
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-sm);
        }
        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 70px;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .ai-page-logo {
            height: 40px;
            width: auto;
        }
        .brand-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 0.5px;
        }
        .nav-menu {
            display: flex;
            gap: 20px;
            align-items: center;
        }
        .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-main);
            padding: 8px 12px;
            border-radius: 4px;
        }
        .nav-link:hover {
            color: var(--primary);
            background-color: var(--primary-light);
        }
        .nav-btn {
            background-color: var(--primary);
            color: var(--white) !important;
            padding: 8px 20px;
            border-radius: 20px;
            font-weight: 600;
            box-shadow: 0 4px 10px rgba(230, 0, 18, 0.2);
        }
        .nav-btn:hover {
            background-color: var(--primary-hover);
            transform: translateY(-1px);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            border: none;
            background: none;
        }
        .nav-toggle span {
            width: 25px;
            height: 3px;
            background-color: var(--text-main);
            transition: 0.3s;
        }

        /* 首页 Hero 首屏 (无图设计，采用渐变与纯排版彰显科技感) */
        .hero {
            background: radial-gradient(circle at 80% 20%, #FFF5F5 0%, #FFFFFF 100%);
            padding: 120px 0 100px;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--border-color);
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -20%;
            right: -10%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(230,0,18,0.03) 0%, rgba(255,255,255,0) 70%);
            border-radius: 50%;
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 900px;
            margin: 0 auto;
        }
        .hero-tag {
            display: inline-block;
            background-color: var(--primary-light);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 25px;
            border: 1px solid rgba(230, 0, 18, 0.15);
            animation: pulse 2s infinite;
        }
        .hero-content h1 {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-main);
            margin-bottom: 25px;
            letter-spacing: -0.5px;
        }
        .hero-content h1 span {
            color: var(--primary);
            background: linear-gradient(120deg, var(--primary) 0%, #FF4D4D 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-desc {
            font-size: 18px;
            color: var(--text-muted);
            margin-bottom: 40px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            gap: 15px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn-primary {
            background-color: var(--primary);
            color: var(--white) !important;
            padding: 14px 32px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 16px;
            box-shadow: 0 8px 20px rgba(230,0,18,0.25);
            transition: all 0.3s ease;
        }
        .btn-primary:hover {
            background-color: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(230,0,18,0.35);
        }
        .btn-secondary {
            background-color: var(--white);
            color: var(--text-main) !important;
            border: 1px solid var(--border-color);
            padding: 14px 32px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 16px;
            transition: all 0.3s ease;
        }
        .btn-secondary:hover {
            border-color: var(--primary);
            color: var(--primary) !important;
            background-color: var(--primary-light);
            transform: translateY(-2px);
        }

        /* 数据指标卡片 */
        .metrics {
            margin-top: -50px;
            position: relative;
            z-index: 10;
        }
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .metric-card {
            background: var(--white);
            padding: 30px 20px;
            border-radius: 12px;
            text-align: center;
            box-shadow: var(--shadow-md);
            border: 1px solid rgba(230, 0, 18, 0.05);
            transition: transform 0.3s;
        }
        .metric-card:hover {
            transform: translateY(-5px);
        }
        .metric-card h3 {
            font-size: 36px;
            color: var(--primary);
            font-weight: 800;
            margin-bottom: 5px;
        }
        .metric-card p {
            font-size: 14px;
            color: var(--text-muted);
        }

        /* 关于我们 */
        .about {
            background-color: var(--white);
        }
        .about-wrap {
            display: flex;
            gap: 50px;
            align-items: center;
        }
        .about-text {
            flex: 1;
        }
        .about-text h3 {
            font-size: 24px;
            margin-bottom: 20px;
            color: var(--text-main);
        }
        .about-text p {
            color: var(--text-muted);
            margin-bottom: 20px;
            line-height: 1.8;
        }
        .about-img {
            flex: 1;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            border: 5px solid var(--white);
        }

        /* 全平台AIGC服务体系 */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .service-card {
            background-color: var(--white);
            padding: 40px 30px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }
        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background-color: var(--primary);
            transform: scaleX(0);
            transition: transform 0.3s;
        }
        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .service-card:hover::before {
            transform: scaleX(1);
        }
        .service-icon {
            font-size: 32px;
            color: var(--primary);
            margin-bottom: 20px;
        }
        .service-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 15px;
        }
        .service-card p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.7;
        }

        /* 标签云组件 (承载支持的AIGC平台) */
        .tag-cloud-section {
            background-color: var(--white);
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
            max-width: 950px;
            margin: 0 auto;
        }
        .tag-item {
            background-color: var(--bg-light);
            border: 1px solid var(--border-color);
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 14px;
            color: var(--text-main);
            transition: all 0.2s ease;
        }
        .tag-item:hover {
            background-color: var(--primary);
            color: var(--white);
            border-color: var(--primary);
            transform: scale(1.05);
        }

        /* 全自动AIGC制作流程 (时间线样式) */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
        }
        .timeline::after {
            content: '';
            position: absolute;
            width: 2px;
            background-color: var(--border-color);
            top: 0;
            bottom: 0;
            left: 50%;
            margin-left: -1px;
        }
        .timeline-item {
            padding: 10px 40px;
            position: relative;
            width: 50%;
            background-color: inherit;
        }
        .timeline-item::after {
            content: '';
            position: absolute;
            width: 16px;
            height: 16px;
            right: -8px;
            background-color: var(--white);
            border: 4px solid var(--primary);
            top: 15px;
            border-radius: 50%;
            z-index: 1;
        }
        .left {
            left: 0;
        }
        .right {
            left: 50%;
        }
        .right::after {
            left: -8px;
        }
        .timeline-content {
            padding: 20px 30px;
            background-color: var(--white);
            position: relative;
            border-radius: 8px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }
        .timeline-content h3 {
            font-size: 18px;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .timeline-content p {
            font-size: 14px;
            color: var(--text-muted);
        }

        /* 解决方案及标准流程 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }
        .solution-card {
            background-color: var(--white);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }
        .solution-info {
            padding: 30px;
        }
        .solution-info h3 {
            font-size: 22px;
            margin-bottom: 15px;
            color: var(--text-main);
        }
        .solution-info p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.8;
        }

        /* 对比评测 (核心特色呈现) */
        .compare-section {
            background-color: var(--white);
        }
        .compare-table-wrap {
            overflow-x: auto;
            margin-top: 30px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-md);
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            background-color: var(--white);
            min-width: 800px;
        }
        .compare-table th, .compare-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-color);
        }
        .compare-table th {
            background-color: var(--bg-light);
            font-weight: 700;
            color: var(--text-main);
        }
        .compare-table tr:last-child td {
            border-bottom: none;
        }
        .compare-table td.highlight {
            background-color: rgba(230, 0, 18, 0.02);
            font-weight: 600;
            color: var(--primary);
        }
        .score-badge {
            background-color: var(--primary);
            color: var(--white);
            padding: 4px 8px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: 700;
        }
        .badge-star {
            color: #FFB300;
            font-size: 16px;
        }

        /* 案例展示 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .case-card {
            background-color: var(--white);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: all 0.3s;
        }
        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
        }
        .case-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/10;
        }
        .case-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .case-body {
            padding: 24px;
        }
        .case-tag {
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 8px;
            display: inline-block;
        }
        .case-body h3 {
            font-size: 18px;
            margin-bottom: 10px;
        }
        .case-body p {
            color: var(--text-muted);
            font-size: 14px;
        }

        /* Token 比价 */
        .token-section {
            background-color: var(--white);
        }
        .token-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 40px;
            align-items: start;
        }
        .token-table-wrap {
            border: 1px solid var(--border-color);
            border-radius: 8px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .token-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
        }
        .token-table th, .token-table td {
            padding: 12px 18px;
            border-bottom: 1px solid var(--border-color);
            font-size: 14px;
        }
        .token-table th {
            background-color: var(--bg-light);
            font-weight: 700;
        }
        .token-table tr:hover td {
            background-color: var(--primary-light);
        }
        .price-drop {
            color: #2E7D32;
            font-weight: 600;
        }
        .token-side-card {
            background-color: var(--primary-light);
            padding: 30px;
            border-radius: 12px;
            border: 1px solid rgba(230, 0, 18, 0.1);
        }
        .token-side-card h3 {
            font-size: 20px;
            color: var(--primary);
            margin-bottom: 15px;
            font-weight: 700;
        }
        .token-side-card p {
            font-size: 14px;
            color: var(--text-main);
            margin-bottom: 20px;
            line-height: 1.7;
        }

        /* 培训版块 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }
        .training-card {
            background: var(--white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
            transition: all 0.3s;
            position: relative;
        }
        .training-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: var(--primary);
        }
        .training-badge {
            position: absolute;
            top: 20px;
            right: 20px;
            background-color: var(--primary-light);
            color: var(--primary);
            font-size: 11px;
            padding: 4px 10px;
            border-radius: 20px;
            font-weight: 600;
        }
        .training-card h3 {
            font-size: 18px;
            margin-bottom: 15px;
            margin-top: 10px;
            color: var(--text-main);
        }
        .training-card p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .training-meta {
            font-size: 13px;
            color: var(--text-main);
            border-top: 1px dashed var(--border-color);
            padding-top: 15px;
        }

        /* 帮助中心 & FAQ & 自助排查 */
        .help-section {
            background-color: var(--white);
        }
        .faq-accordion {
            max-width: 900px;
            margin: 0 auto 50px;
        }
        .faq-item {
            border-bottom: 1px solid var(--border-color);
        }
        .faq-header {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 22px 10px;
            background: none;
            border: none;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            transition: color 0.3s;
        }
        .faq-header:hover {
            color: var(--primary);
        }
        .faq-icon {
            font-size: 18px;
            transition: transform 0.3s;
        }
        .faq-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
        }
        .faq-body-content {
            padding: 0 10px 22px;
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.8;
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            color: var(--primary);
        }
        .faq-item.active .faq-body {
            max-height: 200px; /* 动态控制 */
        }

        /* 自助排查与术语百科 */
        .diagnostic-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
            max-width: 900px;
            margin: 0 auto;
        }
        .diagnostic-card {
            background-color: var(--bg-light);
            border: 1px solid var(--border-color);
            padding: 24px;
            border-radius: 8px;
        }
        .diagnostic-card h4 {
            font-size: 16px;
            color: var(--primary);
            margin-bottom: 12px;
            font-weight: 700;
        }
        .diagnostic-card p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 客户评论 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }
        .review-card {
            background-color: var(--white);
            border: 1px solid var(--border-color);
            padding: 30px;
            border-radius: 12px;
            box-shadow: var(--shadow-sm);
        }
        .review-rating {
            color: #FFB300;
            margin-bottom: 15px;
            font-size: 14px;
        }
        .review-content {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
            line-height: 1.7;
        }
        .review-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .author-info h4 {
            font-size: 14px;
            font-weight: 700;
        }
        .author-info p {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 行业资讯 & 友情链接 */
        .news-section {
            background-color: var(--white);
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .news-card {
            background-color: var(--bg-light);
            border-radius: 8px;
            padding: 24px;
            border: 1px solid var(--border-color);
        }
        .news-date {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 8px;
        }
        .news-card h3 {
            font-size: 16px;
            margin-bottom: 12px;
            line-height: 1.4;
        }
        .news-card h3 a {
            color: var(--text-main);
        }
        .news-card h3 a:hover {
            color: var(--primary);
        }
        .news-desc {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* 智能需求匹配与联系我们 */
        .contact-wrap {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 50px;
            background-color: var(--white);
            padding: 40px;
            border-radius: 16px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-color);
        }
        .form-section h3 {
            font-size: 22px;
            margin-bottom: 25px;
            color: var(--text-main);
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-size: 14px;
            transition: border-color 0.3s;
            outline: none;
        }
        .form-control:focus {
            border-color: var(--primary);
        }
        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .btn-submit {
            background-color: var(--primary);
            color: var(--white);
            border: none;
            padding: 14px 28px;
            border-radius: 30px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            width: 100%;
            box-shadow: 0 4px 12px rgba(230,0,18,0.2);
            transition: all 0.3s;
        }
        .btn-submit:hover {
            background-color: var(--primary-hover);
        }
        
        .contact-info {
            padding-left: 20px;
            border-left: 1px solid var(--border-color);
        }
        .info-item {
            margin-bottom: 25px;
        }
        .info-item h4 {
            font-size: 16px;
            color: var(--primary);
            margin-bottom: 6px;
        }
        .info-item p {
            font-size: 14px;
            color: var(--text-muted);
        }
        .qrcode-box {
            display: flex;
            gap: 30px;
            margin-top: 30px;
        }
        .qrcode-item {
            text-align: center;
        }
        .qrcode-item img {
            width: 100px;
            height: 100px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            margin-bottom: 8px;
        }
        .qrcode-item p {
            font-size: 12px;
            font-weight: 600;
        }

        /* 页脚 */
        footer {
            background-color: #111111;
            color: #999999;
            padding: 60px 0 30px;
            font-size: 14px;
            border-top: 3px solid var(--primary);
        }
        footer a {
            color: #999999;
        }
        footer a:hover {
            color: var(--primary);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.5fr;
            gap: 50px;
            margin-bottom: 40px;
        }
        .footer-brand h4 {
            color: var(--white);
            font-size: 18px;
            margin-bottom: 20px;
            font-weight: 700;
        }
        .footer-brand p {
            margin-bottom: 15px;
            line-height: 1.6;
        }
        .footer-links h4 {
            color: var(--white);
            font-size: 16px;
            margin-bottom: 20px;
            font-weight: 600;
        }
        .footer-links ul {
            display: grid;
            grid-template-columns: 1fr;
            gap: 10px;
        }
        .friend-links {
            border-top: 1px solid #222222;
            padding-top: 25px;
            margin-top: 25px;
        }
        .friend-links h4 {
            color: var(--white);
            font-size: 14px;
            margin-bottom: 15px;
        }
        .friend-links-list {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
        }
        .friend-links-list a {
            font-size: 13px;
        }
        .footer-bottom {
            border-top: 1px solid #222222;
            padding-top: 20px;
            text-align: center;
            font-size: 12px;
        }

        /* 浮动客服 */
        .float-contact {
            position: fixed;
            right: 20px;
            bottom: 30px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .float-item {
            width: 50px;
            height: 50px;
            background-color: var(--primary);
            border-radius: 50%;
            display: flex;
            justify-content: center;
            align-items: center;
            box-shadow: 0 4px 15px rgba(230,0,18,0.3);
            cursor: pointer;
            position: relative;
            transition: all 0.3s;
        }
        .float-item svg {
            fill: var(--white);
            width: 24px;
            height: 24px;
        }
        .float-item:hover {
            background-color: var(--primary-hover);
            transform: scale(1.1);
        }
        .float-qrcode {
            position: absolute;
            right: 60px;
            bottom: 0;
            background: var(--white);
            padding: 15px;
            border-radius: 8px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-color);
            display: none;
            text-align: center;
            width: 140px;
        }
        .float-qrcode img {
            width: 110px;
            height: 110px;
            margin-bottom: 5px;
        }
        .float-qrcode p {
            font-size: 12px;
            color: var(--text-main);
            margin: 0;
            font-weight: 600;
        }
        .float-item:hover .float-qrcode {
            display: block;
        }

        /* 动画效果 */
        @keyframes pulse {
            0% {
                box-shadow: 0 0 0 0 rgba(230, 0, 18, 0.4);
            }
            70% {
                box-shadow: 0 0 0 10px rgba(230, 0, 18, 0);
            }
            100% {
                box-shadow: 0 0 0 0 rgba(230, 0, 18, 0);
            }
        }

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-grid, .cases-grid, .training-grid, .reviews-grid, .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .token-grid, .contact-wrap, .about-wrap {
                grid-template-columns: 1fr;
            }
            .about-wrap {
                flex-direction: column;
            }
            .contact-info {
                border-left: none;
                border-top: 1px solid var(--border-color);
                padding-top: 30px;
                padding-left: 0;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: var(--white);
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow-md);
            }
            .nav-menu.active {
                display: flex;
            }
            .nav-toggle {
                display: flex;
            }
            .hero-content h1 {
                font-size: 30px;
            }
            .timeline::after {
                left: 31px;
            }
            .timeline-item {
                width: 100%;
                padding-left: 70px;
                padding-right: 20px;
            }
            .timeline-item::after {
                left: 22px;
            }
            .right {
                left: 0%;
            }
            .service-grid, .cases-grid, .training-grid, .reviews-grid, .news-grid, .solutions-grid, .metrics-grid {
                grid-template-columns: 1fr;
            }
            .section-padding {
                padding: 50px 0;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .diagnostic-grid {
                grid-template-columns: 1fr;
            }
        }