:root {
            --bg-main: #f8fafc;
            --text-main: #0f172a;
            --text-muted: #475569;
            --primary: #7c3aed; /* 艳丽紫 */
            --secondary: #10b981; /* 极光绿 */
            --accent: #f43f5e; /* 活力粉/红 */
            --white: #ffffff;
            --border-color: #e2e8f0;
            --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
        }

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

        html {
            font-family: var(--font-family);
            background-color: var(--bg-main);
            color: var(--text-main);
            scroll-behavior: smooth;
            line-height: 1.6;
        }

        body {
            overflow-x: hidden;
        }

        /* 布局容器 */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 导航栏 */
        header {
            background-color: rgba(255, 255, 255, 0.95);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
            backdrop-filter: blur(8px);
        }

        .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-name {
            font-size: 1.25rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

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

        .nav-link {
            text-decoration: none;
            color: var(--text-muted);
            font-weight: 500;
            font-size: 0.95rem;
            transition: color 0.3s;
        }

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

        .nav-btn {
            background-color: var(--primary);
            color: var(--white);
            padding: 8px 16px;
            border-radius: 6px;
            text-decoration: none;
            font-weight: 600;
            font-size: 0.9rem;
            transition: transform 0.2s, background-color 0.2s;
        }

        .nav-btn:hover {
            background-color: #6d28d9;
            transform: translateY(-1px);
        }

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

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

        /* 首屏 Hero - 无图片设计，采用强烈色彩碰撞 */
        .hero {
            position: relative;
            background: radial-gradient(circle at 10% 20%, rgba(124, 58, 237, 0.08) 0%, rgba(16, 185, 129, 0.05) 90%);
            padding: 120px 0 80px 0;
            text-align: center;
            overflow: hidden;
            border-bottom: 1px solid var(--border-color);
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -10%;
            right: -10%;
            width: 300px;
            height: 300px;
            background: var(--accent);
            filter: blur(150px);
            opacity: 0.15;
            z-index: 1;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -10%;
            left: -10%;
            width: 350px;
            height: 350px;
            background: var(--secondary);
            filter: blur(150px);
            opacity: 0.12;
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            margin: 0 auto;
        }

        .h1-title {
            font-size: 3rem;
            font-weight: 900;
            line-height: 1.2;
            margin-bottom: 20px;
            color: var(--text-main);
        }

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

        .hero-desc {
            font-size: 1.25rem;
            color: var(--text-muted);
            margin-bottom: 35px;
        }

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

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), #6d28d9);
            color: var(--white);
            padding: 14px 28px;
            border-radius: 8px;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.05rem;
            box-shadow: 0 4px 12px rgba(124, 58, 237, 0.3);
            transition: transform 0.2s, box-shadow 0.2s;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(124, 58, 237, 0.4);
        }

        .btn-outline {
            background-color: transparent;
            color: var(--text-main);
            border: 2px solid var(--text-main);
            padding: 12px 26px;
            border-radius: 8px;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.05rem;
            transition: background-color 0.2s, transform 0.2s;
        }

        .btn-outline:hover {
            background-color: var(--text-main);
            color: var(--white);
            transform: translateY(-2px);
        }

        /* 模块基础样式 */
        .section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
        }

        .section-title {
            text-align: center;
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 15px;
            position: relative;
        }

        .section-title::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            margin: 15px auto 0 auto;
            border-radius: 2px;
        }

        .section-subtitle {
            text-align: center;
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto 50px auto;
        }

        /* 数据指标卡片 */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 25px;
        }

        .metric-card {
            background-color: var(--white);
            border-radius: 12px;
            padding: 30px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: transform 0.3s, box-shadow 0.3s;
        }

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

        .metric-num {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .metric-label {
            font-size: 1rem;
            color: var(--text-muted);
            font-weight: 600;
        }

        /* 关于我们与软件介绍 */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 40px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.75rem;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--primary);
        }

        .about-text p {
            color: var(--text-muted);
            margin-bottom: 15px;
            font-size: 1.05rem;
        }

        .about-features {
            list-style: none;
            margin-top: 20px;
        }

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

        .about-features li::before {
            content: '✓';
            color: var(--secondary);
            font-weight: bold;
        }

        .about-highlight {
            background-color: var(--white);
            border-left: 5px solid var(--accent);
            padding: 25px;
            border-radius: 0 12px 12px 0;
            box-shadow: var(--shadow-sm);
        }

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

        .service-card {
            background-color: var(--white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 35px 25px;
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
        }

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

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background-color: var(--primary);
            opacity: 0;
            transition: opacity 0.3s;
        }

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

        .service-icon {
            font-size: 2rem;
            margin-bottom: 20px;
            color: var(--primary);
        }

        .service-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .service-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* 制作流程 & 时间线 */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
            padding: 20px 0;
        }

        .timeline::after {
            content: '';
            position: absolute;
            width: 4px;
            background-color: var(--border-color);
            top: 0;
            bottom: 0;
            left: 50%;
            margin-left: -2px;
        }

        .timeline-item {
            padding: 10px 40px;
            position: relative;
            width: 50%;
        }

        .timeline-item::after {
            content: '';
            position: absolute;
            width: 20px;
            height: 20px;
            right: -10px;
            background-color: var(--white);
            border: 4px solid var(--primary);
            top: 15px;
            border-radius: 50%;
            z-index: 1;
            transition: background-color 0.3s;
        }

        .timeline-item:hover::after {
            background-color: var(--secondary);
        }

        .left {
            left: 0;
            text-align: right;
        }

        .right {
            left: 50%;
        }

        .right::after {
            left: -10px;
        }

        .timeline-content {
            padding: 20px 30px;
            background-color: var(--white);
            position: relative;
            border-radius: 12px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }

        .timeline-content h3 {
            font-size: 1.2rem;
            margin-bottom: 8px;
            color: var(--primary);
        }

        /* 行业解决方案与展示 */
        .solutions-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .solutions-nav {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .solution-tab {
            background-color: var(--white);
            padding: 20px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            cursor: pointer;
            transition: all 0.3s;
            text-align: left;
        }

        .solution-tab.active, .solution-tab:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
            background: linear-gradient(90deg, #f5f3ff, var(--white));
        }

        .solution-tab h4 {
            font-size: 1.1rem;
            margin-bottom: 5px;
            color: var(--text-main);
        }

        .solution-tab.active h4 {
            color: var(--primary);
        }

        .solution-display {
            background-color: var(--white);
            border-radius: 12px;
            padding: 40px;
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        /* 服务网络与标准化流程 */
        .grid-2col {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .network-map {
            background-color: #0f172a;
            color: var(--white);
            padding: 40px;
            border-radius: 12px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            border: 1px solid #334155;
        }

        .network-map h3 {
            font-size: 1.8rem;
            color: var(--secondary);
            margin-bottom: 20px;
        }

        .network-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
        }

        .network-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.95rem;
        }

        .network-dot {
            width: 8px;
            height: 8px;
            background-color: var(--secondary);
            border-radius: 50%;
            display: inline-block;
            box-shadow: 0 0 8px var(--secondary);
        }

        /* 技术标准 */
        .tech-standards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 25px;
        }

        .tech-card {
            background-color: var(--white);
            padding: 25px;
            border-radius: 10px;
            border: 1px solid var(--border-color);
            text-align: center;
        }

        .tech-card .title {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--primary);
        }

        /* 案例中心 - 内含特定展示图 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .case-card {
            background-color: var(--white);
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: transform 0.3s;
        }

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

        .case-img-container {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
            background-color: #eaeaea;
        }

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

        .case-content {
            padding: 25px;
        }

        .case-tag {
            background-color: #f5f3ff;
            color: var(--primary);
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: 600;
            display: inline-block;
            margin-bottom: 12px;
        }

        .case-title {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        /* 对比评测 - 表格规范 */
        .comparison-container {
            background-color: var(--white);
            border-radius: 12px;
            padding: 40px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }

        .rating-box {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            margin-bottom: 35px;
            flex-wrap: wrap;
        }

        .rating-num {
            font-size: 3.5rem;
            font-weight: 900;
            color: var(--primary);
            line-height: 1;
        }

        .rating-stars {
            display: flex;
            flex-direction: column;
            gap: 5px;
        }

        .stars {
            color: #fbbf24;
            font-size: 1.5rem;
        }

        .rating-text {
            font-weight: 700;
            color: var(--text-muted);
        }

        .comparison-table-wrapper {
            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: #f1f5f9;
            font-weight: 700;
        }

        .comparison-table tr:hover {
            background-color: #f8fafc;
        }

        .comp-highlight {
            font-weight: 700;
            color: var(--primary);
            background-color: #f5f3ff;
        }

        /* Token 比价与平台聚合标签云 */
        .token-showcase {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .tag-cloud-wrapper {
            background-color: var(--white);
            padding: 30px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

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

        .tag {
            background-color: #f1f5f9;
            color: var(--text-main);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            transition: all 0.2s;
        }

        .tag:hover {
            background-color: var(--primary);
            color: var(--white);
        }

        .tag.tag-hot {
            background-color: #ffe4e6;
            color: var(--accent);
        }

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

        .training-card {
            background: linear-gradient(135deg, var(--white), #f8fafc);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
            transition: all 0.3s;
        }

        .training-card:hover {
            border-color: var(--secondary);
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }

        .training-auth {
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--secondary);
            text-transform: uppercase;
            letter-spacing: 0.05em;
            margin-bottom: 10px;
        }

        .training-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        /* 用户评论 */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }

        .comment-card {
            background-color: var(--white);
            border-radius: 12px;
            padding: 30px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            position: relative;
        }

        .comment-quote {
            font-size: 1.5rem;
            color: #e2e8f0;
            position: absolute;
            top: 20px;
            left: 20px;
            line-height: 1;
            font-family: Georgia, serif;
        }

        .comment-text {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 20px;
            position: relative;
            z-index: 2;
        }

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

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

        .user-info span {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* 常见问题排查与百科 */
        .wiki-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 40px;
        }

        .wiki-card, .trouble-card {
            background-color: var(--white);
            padding: 30px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

        .wiki-list, .trouble-list {
            list-style: none;
        }

        .wiki-list li, .trouble-list li {
            margin-bottom: 15px;
            padding-bottom: 15px;
            border-bottom: 1px solid var(--border-color);
        }

        .wiki-list li:last-child, .trouble-list li:last-child {
            margin-bottom: 0;
            padding-bottom: 0;
            border-bottom: none;
        }

        .wiki-list strong, .trouble-list strong {
            color: var(--primary);
            display: block;
            margin-bottom: 5px;
        }

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

        .faq-item {
            background-color: var(--white);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            margin-bottom: 15px;
            overflow: hidden;
            transition: border-color 0.3s;
        }

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

        .faq-question {
            padding: 20px 25px;
            font-weight: 700;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
            background-color: var(--white);
        }

        .faq-question::after {
            content: '+';
            font-size: 1.5rem;
            color: var(--text-muted);
            transition: transform 0.3s;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out, padding 0.3s ease;
            color: var(--text-muted);
            font-size: 0.95rem;
            background-color: #fafafa;
        }

        .faq-item.active .faq-answer {
            padding: 20px 25px;
            border-top: 1px solid var(--border-color);
            max-height: 200px; /* 适当值保证展开 */
        }

        /* 知识库资讯 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
        }

        .news-card {
            background-color: var(--white);
            border-radius: 8px;
            border: 1px solid var(--border-color);
            padding: 25px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .news-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 15px;
            line-height: 1.4;
        }

        .news-link {
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .news-link:hover {
            text-decoration: underline;
        }

        /* 智能需求匹配与表单 */
        .form-section {
            background: linear-gradient(135deg, #f5f3ff 0%, #edf2f7 100%);
        }

        .contact-layout {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 40px;
        }

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

        .contact-methods {
            list-style: none;
            margin-bottom: 30px;
        }

        .contact-methods li {
            margin-bottom: 20px;
            display: flex;
            align-items: flex-start;
            gap: 15px;
        }

        .contact-icon {
            background-color: var(--primary);
            color: var(--white);
            width: 40px;
            height: 40px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            flex-shrink: 0;
        }

        .contact-detail h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 2px;
        }

        .contact-detail p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

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

        .qr-item {
            text-align: center;
            background-color: var(--white);
            padding: 15px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            width: 140px;
        }

        .qr-item img {
            width: 100px;
            height: 100px;
            margin-bottom: 10px;
        }

        .qr-item p {
            font-size: 0.8rem;
            font-weight: bold;
            color: var(--text-main);
        }

        .form-wrapper {
            background-color: var(--white);
            padding: 40px;
            border-radius: 12px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
        }

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

        .form-label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            font-size: 0.95rem;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            outline: none;
            font-family: inherit;
            font-size: 0.95rem;
            transition: border-color 0.3s;
        }

        .form-control:focus {
            border-color: var(--primary);
        }

        .btn-submit {
            background-color: var(--primary);
            color: var(--white);
            width: 100%;
            padding: 14px;
            border: none;
            border-radius: 6px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: background-color 0.3s;
        }

        .btn-submit:hover {
            background-color: #6d28d9;
        }

        /* 友情链接与底部 */
        .footer-links-section {
            background-color: #0f172a;
            color: #94a3b8;
            padding: 40px 0;
            border-bottom: 1px solid #1e293b;
        }

        .links-title {
            color: var(--white);
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 15px;
        }

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 15px 30px;
        }

        .friend-links a {
            color: #94a3b8;
            text-decoration: none;
            font-size: 0.9rem;
            transition: color 0.2s;
        }

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

        footer {
            background-color: #0f172a;
            color: #64748b;
            padding: 40px 0;
            font-size: 0.9rem;
        }

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

        .footer-info {
            max-width: 500px;
        }

        .footer-info p {
            margin-bottom: 10px;
        }

        .footer-copyright {
            font-size: 0.85rem;
            border-top: 1px solid #1e293b;
            padding-top: 20px;
            margin-top: 20px;
            width: 100%;
            text-align: center;
        }

        .ai-page-home-link {
            color: #94a3b8;
            text-decoration: none;
        }

        .ai-page-home-link:hover {
            color: var(--white);
        }

        /* 浮动客服 */
        .floating-service {
            position: fixed;
            bottom: 40px;
            right: 40px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50px;
            background-color: var(--primary);
            color: var(--white);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-lg);
            cursor: pointer;
            transition: background-color 0.3s, transform 0.3s;
            position: relative;
        }

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

        .qr-popover {
            position: absolute;
            bottom: 60px;
            right: 0;
            background-color: var(--white);
            padding: 15px;
            border-radius: 8px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-color);
            display: none;
            width: 150px;
            text-align: center;
        }

        .qr-popover img {
            width: 120px;
            height: 120px;
            margin-bottom: 8px;
        }

        .qr-popover p {
            color: var(--text-main);
            font-size: 0.75rem;
            font-weight: 700;
        }

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

        /* 响应式调整 */
        @media (max-width: 992px) {
            .about-grid, .solutions-grid, .grid-2col, .token-showcase, .wiki-grid, .contact-layout {
                grid-template-columns: 1fr;
            }
            .timeline::after {
                left: 31px;
            }
            .timeline-item {
                width: 100%;
                padding-left: 70px;
                padding-right: 25px;
                text-align: left;
            }
            .left {
                text-align: left;
            }
            .left::after, .right::after {
                left: 21px;
            }
            .h1-title {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: var(--white);
                border-bottom: 1px solid var(--border-color);
                padding: 20px;
                gap: 15px;
                box-shadow: var(--shadow-md);
            }
            .nav-menu.active {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
            .hero {
                padding: 80px 0 50px 0;
            }
        }