:root {
            --primary: #ff5e7e;
            --primary-light: #ffd0d7;
            --secondary: #4ea8de;
            --secondary-light: #d2f0ff;
            --accent: #56cfe1;
            --accent-yellow: #fcf300;
            --neutral-dark: #2b2d42;
            --neutral-light: #f8f9fa;
            --border-radius: 16px;
            --shadow-sm: 0 4px 6px -1px rgba(0,0,0,0.05), 0 2px 4px -1px rgba(0,0,0,0.03);
            --shadow-md: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -2px rgba(0,0,0,0.04);
            --shadow-lg: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 顶部导航 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(12px);
            border-bottom: 2px solid var(--primary-light);
            transition: var(--transition);
        }

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

        .logo-container {
            display: flex;
            align-items: center;
        }

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

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

        .nav-menu a {
            text-decoration: none;
            color: var(--neutral-dark);
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            padding: 8px 12px;
            border-radius: 8px;
        }

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

        .nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff !important;
            padding: 10px 20px !important;
            border-radius: 20px !important;
            box-shadow: var(--shadow-sm);
        }

        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 6px;
            cursor: pointer;
            border: none;
            background: transparent;
        }

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

        /* Hero首屏 - 无图片科技感 */
        .hero {
            padding: 160px 0 100px 0;
            background: radial-gradient(circle at 10% 20%, rgba(255, 208, 215, 0.4) 0%, rgba(210, 240, 255, 0.4) 90%);
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .hero::before {
            content: '';
            position: absolute;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, var(--primary-light) 0%, transparent 70%);
            top: -50px;
            left: -50px;
            z-index: 1;
        }

        .hero::after {
            content: '';
            position: absolute;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, var(--secondary-light) 0%, transparent 70%);
            bottom: -100px;
            right: -50px;
            z-index: 1;
        }

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

        .hero-badge {
            display: inline-block;
            background: #fff;
            padding: 6px 16px;
            border-radius: 30px;
            border: 2px solid var(--secondary);
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 24px;
            box-shadow: var(--shadow-sm);
        }

        .hero h1 {
            font-size: 3rem;
            line-height: 1.2;
            font-weight: 900;
            margin-bottom: 20px;
            background: linear-gradient(135deg, var(--neutral-dark), var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero p {
            font-size: 1.25rem;
            color: #555;
            margin-bottom: 35px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 32px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1.1rem;
            text-decoration: none;
            transition: var(--transition);
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), #ff8fa3);
            color: #fff;
            box-shadow: 0 8px 20px rgba(255, 94, 126, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 25px rgba(255, 94, 126, 0.4);
        }

        .btn-secondary {
            background: #fff;
            color: var(--neutral-dark);
            border: 2px solid var(--neutral-dark);
            box-shadow: var(--shadow-sm);
        }

        .btn-secondary:hover {
            transform: translateY(-3px);
            background-color: var(--neutral-dark);
            color: #fff;
        }

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin-top: 40px;
        }

        .stat-card {
            background: rgba(255, 255, 255, 0.8);
            border: 2px solid var(--primary-light);
            border-radius: var(--border-radius);
            padding: 24px;
            backdrop-filter: blur(8px);
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
        }

        .stat-num {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 0.95rem;
            color: #666;
            font-weight: 600;
        }

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

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

        .section-tag {
            display: inline-block;
            background-color: var(--secondary-light);
            color: var(--secondary);
            font-weight: 700;
            font-size: 0.85rem;
            padding: 6px 12px;
            border-radius: 20px;
            margin-bottom: 12px;
            text-transform: uppercase;
        }

        .section-header h2 {
            font-size: 2.25rem;
            font-weight: 800;
            color: var(--neutral-dark);
            margin-bottom: 15px;
        }

        .section-header p {
            font-size: 1.1rem;
            color: #666;
            max-width: 600px;
            margin: 0 auto;
        }

        /* 平台介绍 & 标签云 */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .intro-text p {
            margin-bottom: 20px;
            font-size: 1.05rem;
            color: #555;
        }

        .intro-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin-top: 30px;
        }

        .intro-feat-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 600;
        }

        .intro-feat-item span {
            display: inline-flex;
            width: 24px;
            height: 24px;
            background-color: var(--primary-light);
            color: var(--primary);
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            font-size: 0.8rem;
        }

        .tag-cloud-box {
            background-color: #fff;
            border: 2px solid var(--secondary-light);
            border-radius: var(--border-radius);
            padding: 30px;
            box-shadow: var(--shadow-sm);
        }

        .tag-cloud-title {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--neutral-dark);
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag-item {
            background-color: var(--neutral-light);
            border: 1px solid rgba(0,0,0,0.05);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 600;
            color: #555;
            transition: var(--transition);
        }

        .tag-item:hover {
            background-color: var(--secondary);
            color: #fff;
            transform: scale(1.05);
        }

        /* AIGC 服务能力 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

        .service-card {
            background: #fff;
            border: 2px solid #f0f0f0;
            border-radius: var(--border-radius);
            padding: 30px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .service-card::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 6px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            opacity: 0;
            transition: var(--transition);
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }

        .service-card:hover::after {
            opacity: 1;
        }

        .service-icon {
            width: 60px;
            height: 60px;
            border-radius: 12px;
            background-color: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            margin-bottom: 24px;
        }

        .service-card:nth-child(even) .service-icon {
            background-color: var(--secondary-light);
            color: var(--secondary);
        }

        .service-card h3 {
            font-size: 1.35rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--neutral-dark);
        }

        .service-card p {
            color: #666;
            font-size: 0.95rem;
        }

        /* 流程步骤与时间线 */
        .process-flow {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 30px;
            position: relative;
        }

        .process-step {
            background: #fff;
            border-radius: var(--border-radius);
            padding: 30px;
            border: 2px solid var(--secondary-light);
            text-align: center;
            position: relative;
            transition: var(--transition);
        }

        .process-step:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
        }

        .step-num {
            display: inline-flex;
            width: 40px;
            height: 40px;
            background-color: var(--primary);
            color: #fff;
            border-radius: 50%;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
            margin-bottom: 20px;
        }

        .process-step:nth-child(even) .step-num {
            background-color: var(--secondary);
        }

        .process-step h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .process-step p {
            font-size: 0.9rem;
            color: #666;
        }

        /* 行业解决方案与服务网络 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .solution-card {
            background-color: #fff;
            border-radius: var(--border-radius);
            padding: 30px;
            border: 2px solid #f0f0f0;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            transition: var(--transition);
        }

        .solution-card:hover {
            border-color: var(--secondary);
            box-shadow: var(--shadow-md);
        }

        .sol-meta h3 {
            font-size: 1.4rem;
            margin-bottom: 12px;
            color: var(--neutral-dark);
        }

        .sol-meta p {
            font-size: 0.95rem;
            color: #666;
            margin-bottom: 20px;
        }

        .sol-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .sol-tags span {
            background-color: var(--neutral-light);
            padding: 4px 10px;
            border-radius: 6px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--secondary);
        }

        /* 案例中心 - 素材图展示 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

        .case-card {
            background: #fff;
            border-radius: var(--border-radius);
            overflow: hidden;
            border: 2px solid var(--primary-light);
            transition: var(--transition);
        }

        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }

        .case-image-wrapper {
            position: relative;
            background-color: #eee;
            overflow: hidden;
            aspect-ratio: 16/10;
            display: flex;
            align-items: center;
            justify-content: center;
        }

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

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

        .case-info {
            padding: 20px;
        }

        .case-category {
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--primary);
            text-transform: uppercase;
            margin-bottom: 8px;
        }

        .case-info h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--neutral-dark);
        }

        .case-info p {
            font-size: 0.9rem;
            color: #666;
        }

        /* 对比评测板块 */
        .review-table-wrapper {
            background-color: #fff;
            border-radius: var(--border-radius);
            border: 2px solid var(--secondary-light);
            padding: 30px;
            box-shadow: var(--shadow-sm);
            overflow-x: auto;
        }

        .review-header-summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 30px;
            border-bottom: 2px dashed #f0f0f0;
            padding-bottom: 20px;
            flex-wrap: wrap;
            gap: 20px;
        }

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

        .score {
            font-size: 3rem;
            font-weight: 900;
            color: var(--primary);
            line-height: 1;
        }

        .stars {
            color: #fca311;
            font-size: 1.5rem;
        }

        .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 #f0f0f0;
        }

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

        .compare-table tr:hover td {
            background-color: rgba(255, 94, 126, 0.05);
        }

        .highlight-col {
            color: var(--primary);
            font-weight: 700;
        }

        /* Token 比价 */
        .price-card {
            background-color: #fff;
            border: 2px solid var(--primary-light);
            border-radius: var(--border-radius);
            padding: 30px;
            box-shadow: var(--shadow-sm);
        }

        .price-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .price-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-bottom: 12px;
            border-bottom: 1px solid #f0f0f0;
        }

        .price-name {
            font-weight: 700;
        }

        .price-val {
            font-weight: 700;
            color: var(--secondary);
        }

        .price-val span {
            color: var(--primary);
            font-size: 1.2rem;
        }

        /* 培训中心 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

        .training-card {
            background: #fff;
            border: 2px solid #f0f0f0;
            border-radius: var(--border-radius);
            padding: 30px;
            transition: var(--transition);
        }

        .training-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
        }

        .train-badge {
            background-color: var(--primary-light);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 6px;
            margin-bottom: 16px;
            display: inline-block;
        }

        .training-card h3 {
            font-size: 1.25rem;
            margin-bottom: 12px;
            color: var(--neutral-dark);
        }

        .training-card p {
            font-size: 0.95rem;
            color: #666;
        }

        /* FAQ折叠面板 */
        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .faq-item {
            background-color: #fff;
            border: 2px solid var(--secondary-light);
            border-radius: 12px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-question {
            width: 100%;
            text-align: left;
            background: none;
            border: none;
            padding: 20px 24px;
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--neutral-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .faq-question::after {
            content: '+';
            font-size: 1.4rem;
            color: var(--secondary);
            transition: var(--transition);
        }

        .faq-item.active {
            border-color: var(--primary);
        }

        .faq-item.active .faq-question::after {
            content: '−';
            color: var(--primary);
        }

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

        .faq-answer-inner {
            padding: 20px 24px;
            font-size: 0.95rem;
            color: #555;
            border-top: 1px solid rgba(0,0,0,0.05);
        }

        /* AI 术语百科 */
        .glossary-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }

        .glossary-card {
            background-color: #fff;
            border-radius: 12px;
            padding: 24px;
            border: 1px solid #e0e0e0;
        }

        .glossary-card h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
            color: var(--secondary);
        }

        .glossary-card p {
            font-size: 0.9rem;
            color: #666;
        }

        /* 客户评论卡片 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .review-card {
            background: #fff;
            border-radius: var(--border-radius);
            padding: 30px;
            border: 2px solid var(--primary-light);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .review-text {
            font-style: italic;
            font-size: 0.98rem;
            color: #444;
            margin-bottom: 20px;
        }

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

        .author-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background-color: var(--secondary-light);
            color: var(--secondary);
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .author-info h4 {
            font-size: 0.95rem;
            font-weight: 700;
        }

        .author-info span {
            font-size: 0.8rem;
            color: #777;
        }

        /* 行业资讯 / 知识库 */
        .articles-box {
            background-color: #fff;
            border-radius: var(--border-radius);
            border: 2px solid var(--secondary-light);
            padding: 35px;
        }

        .article-list {
            display: grid;
            gap: 20px;
        }

        .article-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-bottom: 16px;
            border-bottom: 1px solid #f0f0f0;
            gap: 20px;
            flex-wrap: wrap;
        }

        .article-title-link {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--neutral-dark);
            text-decoration: none;
            transition: var(--transition);
        }

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

        .article-meta {
            font-size: 0.85rem;
            color: #888;
        }

        /* 需求匹配与联系我们表单 */
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
        }

        .contact-info-panel {
            background: linear-gradient(135deg, var(--neutral-dark), #1d1e2c);
            color: #fff;
            border-radius: var(--border-radius);
            padding: 40px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .contact-details {
            display: flex;
            flex-direction: column;
            gap: 24px;
            margin: 30px 0;
        }

        .contact-detail-item {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .contact-detail-item i {
            font-size: 1.5rem;
            color: var(--primary);
        }

        .qr-codes {
            display: flex;
            gap: 20px;
            margin-top: 20px;
        }

        .qr-item {
            background: #fff;
            padding: 10px;
            border-radius: 8px;
            text-align: center;
            color: var(--neutral-dark);
            width: 130px;
        }

        .qr-item img {
            width: 100%;
            height: auto;
            border-radius: 4px;
            margin-bottom: 8px;
        }

        .qr-item span {
            font-size: 0.75rem;
            font-weight: 700;
        }

        .form-panel {
            background: #fff;
            border: 2px solid var(--primary-light);
            border-radius: var(--border-radius);
            padding: 40px;
            box-shadow: var(--shadow-sm);
        }

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

        .form-group label {
            display: block;
            font-weight: 700;
            margin-bottom: 8px;
            font-size: 0.95rem;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border-radius: 8px;
            border: 2px solid #e0e0e0;
            font-size: 1rem;
            transition: var(--transition);
        }

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

        /* 友情链接与底部 */
        footer {
            background-color: var(--neutral-dark);
            color: #fff;
            padding: 60px 0 30px 0;
            border-top: 4px solid var(--primary);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 45px;
        }

        .footer-logo img {
            height: 40px;
            width: auto;
            margin-bottom: 20px;
        }

        .footer-col h3 {
            font-size: 1.1rem;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 8px;
        }

        .footer-col h3::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 30px;
            height: 3px;
            background-color: var(--secondary);
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-links a {
            color: #bbb;
            text-decoration: none;
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 0.9rem;
            color: #888;
        }

        .friend-links-box {
            background-color: rgba(255,255,255,0.05);
            padding: 15px;
            border-radius: 8px;
            margin-bottom: 30px;
        }

        .friend-links-box span {
            font-weight: 700;
            margin-right: 15px;
            color: #fff;
        }

        .friend-links-box a {
            color: #aaa;
            text-decoration: none;
            margin-right: 15px;
            transition: var(--transition);
        }

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

        /* 浮动组件与返回顶部 */
        .float-bar {
            position: fixed;
            right: 20px;
            bottom: 20px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            z-index: 999;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            background-color: #fff;
            border: 2px solid var(--primary-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-md);
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            color: var(--neutral-dark);
            position: relative;
        }

        .float-btn:hover {
            background-color: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }

        .float-qr {
            position: absolute;
            bottom: 60px;
            right: 0;
            background-color: #fff;
            padding: 12px;
            border-radius: 8px;
            box-shadow: var(--shadow-lg);
            display: none;
            width: 140px;
            border: 2px solid var(--primary-light);
        }

        .float-qr img {
            width: 100%;
            height: auto;
        }

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

        /* 响应式调整 */
        @media (max-width: 992px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: #fff;
                padding: 20px;
                border-bottom: 2px solid var(--primary-light);
                box-shadow: var(--shadow-md);
            }

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

            .menu-toggle {
                display: flex;
            }

            .hero h1 {
                font-size: 2.25rem;
            }

            .intro-grid, .contact-grid {
                grid-template-columns: 1fr;
            }

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