/* 基础变量与鲜绿夺目风格定义 */
        :root {
            --primary: #10B981;       /* 鲜绿色 */
            --primary-hover: #059669; /* 深鲜绿 */
            --primary-light: #F0FDF4; /* 极浅绿背景 */
            --dark: #111827;          /* 极深灰 */
            --gray-text: #4B5563;     /* 文本灰 */
            --light-bg: #F9FAFB;      /* 页面背景底色 */
            --border-color: #E5E7EB;  /* 边框色 */
            --card-shadow: 0 10px 30px -10px rgba(16, 185, 129, 0.08), 0 1px 3px rgba(0, 0, 0, 0.02);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* 基础重置 */
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--light-bg);
            color: var(--dark);
            line-height: 1.6;
        }
        body {
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        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: 80px 0;
            border-bottom: 1px solid var(--border-color);
        }
        .section-title {
            text-align: center;
            margin-bottom: 50px;
        }
        .section-title h2 {
            font-size: 2rem;
            color: var(--dark);
            position: relative;
            display: inline-block;
            padding-bottom: 12px;
        }
        .section-title h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background-color: var(--primary);
            border-radius: 2px;
        }
        .section-title p {
            color: var(--gray-text);
            margin-top: 15px;
            font-size: 1.1rem;
        }

        /* 顶部导航 */
        header {
            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;
        }
        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 70px;
        }
        .logo-box {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .ai-page-logo {
            height: 40px;
            width: auto;
        }
        .brand-name {
            font-weight: 800;
            font-size: 1.4rem;
            color: var(--dark);
            background: linear-gradient(135deg, var(--dark) 0%, var(--primary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .nav-menu {
            display: flex;
            gap: 20px;
            list-style: none;
            align-items: center;
        }
        .nav-item a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--gray-text);
            padding: 8px 12px;
            border-radius: 6px;
        }
        .nav-item a:hover {
            color: var(--primary);
            background-color: var(--primary-light);
        }
        .nav-btn {
            background-color: var(--primary);
            color: #fff !important;
            padding: 8px 20px !important;
            border-radius: 20px !important;
            font-weight: 600;
            box-shadow: 0 4px 12px rgba(16, 185, 129, 0.2);
        }
        .nav-btn:hover {
            background-color: var(--primary-hover);
            box-shadow: 0 6px 16px rgba(16, 185, 129, 0.3);
        }
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            border: none;
            background: none;
        }
        .menu-toggle span {
            width: 25px;
            height: 3px;
            background-color: var(--dark);
            transition: var(--transition);
        }

        /* Hero首屏 - 严格限制：无任何图片 */
        .hero {
            background: radial-gradient(circle at 80% 20%, rgba(16, 185, 129, 0.08) 0%, transparent 50%), 
                        radial-gradient(circle at 20% 80%, rgba(5, 150, 105, 0.05) 0%, transparent 50%),
                        #ffffff;
            padding: 100px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--primary), transparent);
        }
        .hero-tag {
            display: inline-block;
            background-color: var(--primary-light);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 25px;
            border: 1px solid rgba(16, 185, 129, 0.2);
            animation: pulse 2s infinite;
        }
        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.05); }
            100% { transform: scale(1); }
        }
        .hero-title {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.25;
            color: var(--dark);
            max-width: 900px;
            margin: 0 auto 20px auto;
        }
        .hero-subtitle {
            font-size: 1.25rem;
            color: var(--gray-text);
            max-width: 700px;
            margin: 0 auto 40px auto;
        }
        .hero-cta {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
            margin-bottom: 50px;
        }
        .btn {
            display: inline-block;
            padding: 14px 32px;
            border-radius: 8px;
            font-size: 1.05rem;
            font-weight: 600;
            text-align: center;
            cursor: pointer;
            transition: var(--transition);
        }
        .btn-primary {
            background-color: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
        }
        .btn-primary:hover {
            background-color: var(--primary-hover);
            transform: translateY(-2px);
        }
        .btn-secondary {
            background-color: #fff;
            color: var(--dark);
            border: 1px solid var(--border-color);
        }
        .btn-secondary:hover {
            background-color: var(--light-bg);
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }

        /* 平台聚合标签滑动带 */
        .model-ticker {
            background-color: #fff;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            padding: 20px 0;
            overflow: hidden;
            position: relative;
        }
        .model-track {
            display: flex;
            gap: 30px;
            width: max-content;
            animation: scroll 40s linear infinite;
        }
        .model-item {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--gray-text);
            background: var(--light-bg);
            padding: 6px 16px;
            border-radius: 4px;
            border: 1px solid var(--border-color);
            white-space: nowrap;
        }
        .model-item span {
            color: var(--primary);
            margin-right: 4px;
        }
        @keyframes scroll {
            0% { transform: translateX(0); }
            100% { transform: translateX(-50%); }
        }

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
            position: relative;
            z-index: 10;
        }
        .stat-card {
            background: #fff;
            padding: 30px 20px;
            border-radius: 12px;
            text-align: center;
            box-shadow: var(--card-shadow);
            border: 1px solid rgba(16, 185, 129, 0.1);
            transition: var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 5px;
        }
        .stat-label {
            font-size: 0.95rem;
            color: var(--gray-text);
            font-weight: 500;
        }

        /* 平台介绍 & 关于我们 */
        .intro-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        .intro-text h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
            color: var(--dark);
        }
        .intro-text p {
            color: var(--gray-text);
            margin-bottom: 25px;
            font-size: 1.05rem;
            line-height: 1.8;
        }
        .intro-points {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .point-item {
            background-color: #fff;
            padding: 20px;
            border-radius: 8px;
            border-left: 4px solid var(--primary);
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
        }
        .point-title {
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--dark);
        }
        .point-desc {
            font-size: 0.88rem;
            color: var(--gray-text);
        }

        /* AIGC 服务能力卡片 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .service-card {
            background-color: #fff;
            padding: 40px 30px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            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: var(--card-shadow);
            border-color: rgba(16, 185, 129, 0.2);
        }
        .service-card:hover::before {
            background-color: var(--primary);
        }
        .service-icon {
            width: 60px;
            height: 60px;
            background-color: var(--primary-light);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            margin-bottom: 25px;
        }
        .service-icon svg {
            width: 30px;
            height: 30px;
        }
        .service-title {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 15px;
            color: var(--dark);
        }
        .service-desc {
            color: var(--gray-text);
            font-size: 0.95rem;
            margin-bottom: 20px;
        }
        .service-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .service-tag {
            font-size: 0.75rem;
            background-color: var(--light-bg);
            color: var(--gray-text);
            padding: 4px 10px;
            border-radius: 4px;
        }

        /* 流程步骤与时间线 */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            position: relative;
        }
        .process-step {
            background: #fff;
            padding: 30px 20px;
            border-radius: 10px;
            border: 1px solid var(--border-color);
            text-align: center;
            position: relative;
        }
        .step-num {
            position: absolute;
            top: -20px;
            left: 50%;
            transform: translateX(-50%);
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: var(--primary);
            color: #fff;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 4px solid #fff;
            box-shadow: 0 4px 10px rgba(16, 185, 129, 0.3);
        }
        .step-title {
            font-weight: 700;
            margin-top: 15px;
            margin-bottom: 10px;
            color: var(--dark);
        }
        .step-desc {
            font-size: 0.88rem;
            color: var(--gray-text);
        }

        /* 对比评测表格 */
        .comparison-wrapper {
            background: #fff;
            border-radius: 16px;
            padding: 40px;
            border: 1px solid var(--border-color);
            box-shadow: var(--card-shadow);
        }
        .rating-banner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-bottom: 30px;
            border-bottom: 1px solid var(--border-color);
            margin-bottom: 30px;
            flex-wrap: wrap;
            gap: 20px;
        }
        .rating-info {
            display: flex;
            align-items: center;
            gap: 15px;
        }
        .rating-badge {
            background-color: #FBBF24;
            color: #fff;
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 1.5rem;
            font-weight: 800;
        }
        .rating-stars {
            color: #FBBF24;
            font-size: 1.4rem;
        }
        .table-responsive {
            width: 100%;
            overflow-x: auto;
        }
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 600px;
        }
        .comparison-table th, .comparison-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-color);
        }
        .comparison-table th {
            background-color: var(--light-bg);
            font-weight: 700;
            color: var(--dark);
        }
        .comparison-table td strong {
            color: var(--primary);
        }

        /* 案例展示 */
        .case-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }
        .case-card {
            background: #fff;
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05);
            transition: var(--transition);
        }
        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--card-shadow);
        }
        .case-img-container {
            position: relative;
            background-color: #E5E7EB;
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }
        .case-img-container img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .case-info {
            padding: 25px;
        }
        .case-tag {
            background-color: var(--primary-light);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 4px;
            display: inline-block;
            margin-bottom: 12px;
        }
        .case-title {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--dark);
        }
        .case-desc {
            font-size: 0.92rem;
            color: var(--gray-text);
        }

        /* 人工智能职业培训 */
        .training-banner {
            background-color: var(--dark);
            color: #fff;
            border-radius: 16px;
            padding: 50px;
            margin-bottom: 40px;
            position: relative;
            overflow: hidden;
        }
        .training-banner::before {
            content: '';
            position: absolute;
            right: -100px;
            top: -100px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(16,185,129,0.3) 0%, transparent 70%);
        }
        .training-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }
        .training-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 8px;
            padding: 25px;
            transition: var(--transition);
            backdrop-filter: blur(10px);
        }
        .training-card:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--primary);
        }
        .training-title {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .training-title::before {
            content: '';
            width: 8px;
            height: 8px;
            background-color: var(--primary);
            border-radius: 50%;
        }
        .training-desc {
            font-size: 0.88rem;
            color: #9CA3AF;
        }

        /* 客户评论 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .review-card {
            background-color: #fff;
            padding: 30px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 6px -1px rgba(0,0,0,0.02);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .review-content {
            font-size: 0.95rem;
            color: var(--gray-text);
            margin-bottom: 20px;
            position: relative;
        }
        .review-content::before {
            content: "“";
            font-size: 3rem;
            color: rgba(16, 185, 129, 0.15);
            position: absolute;
            top: -20px;
            left: -10px;
            font-family: serif;
        }
        .review-author {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid var(--border-color);
            padding-top: 15px;
        }
        .author-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: var(--primary-light);
            color: var(--primary);
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .author-info h4 {
            font-size: 0.92rem;
            color: var(--dark);
        }
        .author-info p {
            font-size: 0.78rem;
            color: var(--gray-text);
        }

        /* 加盟代理区 */
        .agency-box {
            background: linear-gradient(135deg, var(--primary-light) 0%, rgba(255,255,255,1) 100%);
            border: 2px dashed rgba(16, 185, 129, 0.3);
            border-radius: 16px;
            padding: 50px;
            text-align: center;
            max-width: 900px;
            margin: 0 auto;
        }
        .agency-title {
            font-size: 1.8rem;
            color: var(--dark);
            margin-bottom: 15px;
            font-weight: 800;
        }
        .agency-desc {
            font-size: 1.05rem;
            color: var(--gray-text);
            margin-bottom: 30px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        /* FAQ折叠面板 */
        .faq-list {
            max-width: 850px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .faq-item {
            background-color: #fff;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-header {
            padding: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 700;
            color: var(--dark);
            user-select: none;
        }
        .faq-header:hover {
            color: var(--primary);
        }
        .faq-icon {
            transition: transform 0.3s;
            color: var(--primary);
        }
        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
            background-color: var(--light-bg);
            padding: 0 20px;
            color: var(--gray-text);
            font-size: 0.95rem;
        }
        .faq-item.active .faq-content {
            max-height: 500px;
            padding: 20px;
            border-top: 1px solid var(--border-color);
        }
        .faq-item.active .faq-icon {
            transform: rotate(180deg);
        }

        /* AI术语百科 & 行业资讯 */
        .news-layout {
            display: grid;
            grid-template-columns: 1fr 2fr;
            gap: 40px;
        }
        .glossary-box {
            background-color: #fff;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            padding: 30px;
            height: fit-content;
        }
        .glossary-title {
            font-size: 1.25rem;
            font-weight: 800;
            margin-bottom: 20px;
            color: var(--dark);
            border-bottom: 2px solid var(--primary-light);
            padding-bottom: 10px;
        }
        .glossary-list {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .glossary-item dt {
            font-weight: 700;
            color: var(--primary);
            font-size: 0.95rem;
        }
        .glossary-item dd {
            font-size: 0.88rem;
            color: var(--gray-text);
            margin-left: 0;
            margin-top: 4px;
        }
        .articles-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .article-card {
            background-color: #fff;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 20px;
            transition: var(--transition);
        }
        .article-card:hover {
            border-color: var(--primary);
            box-shadow: 0 4px 12px rgba(16, 185, 129, 0.05);
        }
        .article-meta {
            font-size: 0.8rem;
            color: var(--gray-text);
            margin-bottom: 8px;
        }
        .article-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 10px;
        }
        .article-title a:hover {
            color: var(--primary);
        }
        .article-desc {
            font-size: 0.9rem;
            color: var(--gray-text);
        }

        /* 需求匹配与联系我们表单 */
        .contact-layout {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 50px;
        }
        .contact-form-box {
            background: #fff;
            padding: 40px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            box-shadow: var(--card-shadow);
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-label {
            display: block;
            margin-bottom: 8px;
            font-weight: 700;
            color: var(--dark);
            font-size: 0.92rem;
        }
        .form-input, .form-select, .form-textarea {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-family: inherit;
            font-size: 0.95rem;
            transition: var(--transition);
        }
        .form-input:focus, .form-select:focus, .form-textarea:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
        }
        .contact-info-box {
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .contact-info-list {
            display: flex;
            flex-direction: column;
            gap: 25px;
        }
        .info-item {
            display: flex;
            gap: 15px;
            align-items: flex-start;
        }
        .info-icon {
            width: 45px;
            height: 45px;
            border-radius: 8px;
            background-color: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .info-content h4 {
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 4px;
        }
        .info-content p, .info-content a {
            color: var(--gray-text);
            font-size: 0.92rem;
        }
        .qrcode-box {
            display: flex;
            gap: 30px;
            align-items: center;
            margin-top: 30px;
            background: #fff;
            padding: 20px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }
        .qrcode-img {
            width: 100px;
            height: 100px;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            overflow: hidden;
        }
        .qrcode-text {
            font-size: 0.88rem;
            color: var(--gray-text);
        }
        .qrcode-text strong {
            color: var(--dark);
            display: block;
            margin-bottom: 5px;
        }

        /* 友情链接与页脚 */
        footer {
            background-color: var(--dark);
            color: #9CA3AF;
            padding: 60px 0 30px 0;
            border-top: 1px solid #1F2937;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand h3 {
            color: #fff;
            font-size: 1.5rem;
            font-weight: 800;
            margin-bottom: 15px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
        }
        .footer-title {
            color: #fff;
            font-weight: 700;
            margin-bottom: 15px;
            font-size: 1rem;
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
            font-size: 0.88rem;
        }
        .footer-links a:hover {
            color: var(--primary);
        }
        .friend-links {
            border-top: 1px solid #1F2937;
            padding-top: 25px;
            margin-bottom: 25px;
        }
        .friend-links-list {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            font-size: 0.85rem;
        }
        .friend-links-list a {
            color: #6B7280;
        }
        .friend-links-list a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid #1F2937;
            padding-top: 25px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            flex-wrap: wrap;
            gap: 15px;
        }
        .footer-bottom p {
            color: #6B7280;
        }

        /* 侧边浮动导航 */
        .float-bar {
            position: fixed;
            right: 20px;
            bottom: 40px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            z-index: 999;
        }
        .float-item {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: #fff;
            box-shadow: 0 4px 12px rgba(0,0,0,0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
            color: var(--dark);
            border: 1px solid var(--border-color);
            position: relative;
        }
        .float-item:hover {
            background-color: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }
        .float-item svg {
            width: 24px;
            height: 24px;
        }
        .float-item:hover .float-tooltip {
            opacity: 1;
            transform: translateX(0);
        }
        .float-tooltip {
            position: absolute;
            right: 60px;
            background-color: var(--dark);
            color: #fff;
            padding: 8px 12px;
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: 600;
            white-space: nowrap;
            opacity: 0;
            transform: translateX(10px);
            transition: var(--transition);
            pointer-events: none;
            box-shadow: 0 2px 8px rgba(0,0,0,0.1);
        }

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .services-grid, .training-grid, .reviews-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.2rem;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background-color: #fff;
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: 0 4px 6px rgba(0,0,0,0.05);
            }
            .nav-menu.active {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
            .intro-layout, .case-grid, .news-layout, .contact-layout {
                grid-template-columns: 1fr;
            }
            .services-grid, .training-grid, .reviews-grid, .stats-grid, .process-steps {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .process-steps {
                gap: 40px;
            }
        }