:root {
            --primary: #10B981;
            --primary-dark: #059669;
            --primary-light: #ECFDF5;
            --secondary: #064E3B;
            --dark: #1F2937;
            --gray-dark: #374151;
            --gray: #6B7280;
            --gray-light: #F3F4F6;
            --white: #FFFFFF;
            --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.02);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }

        /* 顶部导航 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
            z-index: 1000;
            border-bottom: 1px solid var(--gray-light);
        }

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

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

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

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--secondary);
            letter-spacing: 0.5px;
        }

        nav {
            display: flex;
            align-items: center;
            gap: 20px;
        }

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

        .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--gray-dark);
            padding: 5px 10px;
            border-radius: 4px;
        }

        .nav-link:hover, .nav-link.active {
            color: var(--primary);
            background-color: var(--primary-light);
        }

        .nav-btn {
            background-color: var(--primary);
            color: var(--white);
            padding: 8px 18px;
            border-radius: 6px;
            font-size: 14px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 6px -1px rgba(16, 185, 129, 0.2);
        }

        .nav-btn:hover {
            background-color: var(--primary-dark);
            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(--dark);
            border-radius: 2px;
            transition: var(--transition);
        }

        /* 英雄首屏 - 严禁出现图片 */
        .hero-section {
            padding-top: 150px;
            padding-bottom: 90px;
            background: linear-gradient(135deg, #F0FDF4 0%, #FFFFFF 50%, #ECFDF5 100%);
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -10%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(16,185,129,0.08) 0%, rgba(255,255,255,0) 70%);
            border-radius: 50%;
            z-index: 1;
        }

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

        .hero-tag {
            display: inline-block;
            background-color: var(--primary-light);
            color: var(--primary-dark);
            font-size: 14px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 50px;
            margin-bottom: 24px;
            border: 1px solid rgba(16, 185, 129, 0.2);
        }

        h1.hero-title {
            font-size: 2.5rem;
            line-height: 1.25;
            color: var(--secondary);
            font-weight: 800;
            margin-bottom: 24px;
            letter-spacing: -0.5px;
        }

        .hero-desc {
            font-size: 1.125rem;
            color: var(--gray-dark);
            margin-bottom: 40px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin-bottom: 48px;
        }

        .btn-primary {
            background-color: var(--primary);
            color: var(--white);
            padding: 14px 28px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
        }

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

        .btn-secondary {
            background-color: var(--white);
            color: var(--gray-dark);
            border: 1px solid #D1D5DB;
            padding: 14px 28px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
        }

        .btn-secondary:hover {
            border-color: var(--primary);
            color: var(--primary);
            background-color: var(--primary-light);
            transform: translateY(-2px);
        }

        /* 核心卖点轻卡片 */
        .hero-features {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .hero-feat-card {
            background-color: rgba(255, 255, 255, 0.8);
            border: 1px solid rgba(16, 185, 129, 0.1);
            padding: 20px;
            border-radius: 12px;
            box-shadow: var(--shadow);
            backdrop-filter: blur(5px);
        }

        .hero-feat-card h3 {
            font-size: 16px;
            color: var(--secondary);
            margin-bottom: 8px;
        }

        .hero-feat-card p {
            font-size: 13px;
            color: var(--gray);
        }

        /* 通用区块样式 */
        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--gray-light);
        }

        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 50px auto;
        }

        .section-tag {
            color: var(--primary);
            font-weight: 700;
            font-size: 14px;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 10px;
            display: block;
        }

        .section-title {
            font-size: 32px;
            color: var(--secondary);
            font-weight: 700;
            margin-bottom: 15px;
        }

        .section-desc {
            color: var(--gray);
            font-size: 16px;
        }

        /* 数据指标卡片 - 关于我们 */
        .about-section {
            background-color: var(--white);
        }

        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

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

        .about-text p {
            color: var(--gray-dark);
            margin-bottom: 20px;
            font-size: 15px;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .stat-card {
            background-color: var(--primary-light);
            border-left: 4px solid var(--primary);
            padding: 20px;
            border-radius: 8px;
        }

        .stat-num {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary-dark);
            margin-bottom: 5px;
        }

        .stat-label {
            font-size: 14px;
            color: var(--secondary);
            font-weight: 600;
        }

        /* 全平台AIGC服务 + 一站式AIGC制作 */
        .services-section {
            background-color: var(--light);
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background-color: var(--white);
            border-radius: 12px;
            padding: 30px;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid transparent;
        }

        .service-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
        }

        .service-icon {
            width: 50px;
            height: 50px;
            background-color: var(--primary-light);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 24px;
            margin-bottom: 20px;
            font-weight: bold;
        }

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

        .service-card p {
            color: var(--gray);
            font-size: 14px;
            margin-bottom: 15px;
        }

        .service-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }

        .tag-pill {
            background-color: var(--gray-light);
            color: var(--gray-dark);
            font-size: 12px;
            padding: 3px 8px;
            border-radius: 4px;
        }

        /* AI平台展示墙 */
        .platform-cloud {
            margin-top: 50px;
            background-color: var(--white);
            padding: 30px;
            border-radius: 12px;
            border: 1px solid var(--gray-light);
            text-align: center;
        }

        .platform-cloud h4 {
            font-size: 16px;
            color: var(--secondary);
            margin-bottom: 20px;
            font-weight: 700;
        }

        .platform-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }

        .platform-tag {
            background-color: var(--primary-light);
            color: var(--secondary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 6px;
            border: 1px solid rgba(16, 185, 129, 0.15);
        }

        /* 解决方案区（包含指定图片） */
        .solutions-section {
            background-color: var(--white);
        }

        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 40px;
            align-items: center;
        }

        .solutions-gallery {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

        .gallery-img-wrap {
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--gray-light);
        }

        .gallery-img-wrap img {
            width: 100%;
            height: auto;
            display: block;
            object-fit: cover;
            transition: var(--transition);
        }

        .gallery-img-wrap img:hover {
            transform: scale(1.02);
        }

        .solutions-content h3 {
            font-size: 24px;
            color: var(--secondary);
            margin-bottom: 20px;
        }

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

        .solutions-list li {
            position: relative;
            padding-left: 25px;
            margin-bottom: 15px;
            font-size: 15px;
            color: var(--gray-dark);
        }

        .solutions-list li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--primary);
            font-weight: bold;
        }

        /* 全国服务网络 + 代理加盟 */
        .network-section {
            background-color: var(--secondary);
            color: var(--white);
        }

        .network-section .section-title {
            color: var(--white);
        }

        .network-section .section-desc {
            color: #A7F3D0;
        }

        .network-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .network-card {
            background-color: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            padding: 30px;
            border-radius: 12px;
            transition: var(--transition);
        }

        .network-card:hover {
            background-color: rgba(255, 255, 255, 0.12);
            transform: translateY(-5px);
        }

        .network-card h3 {
            font-size: 18px;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .network-card p {
            font-size: 14px;
            color: #E2E8F0;
        }

        /* 流程与技术标准 */
        .workflow-section {
            background-color: var(--light);
        }

        .steps-container {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-bottom: 50px;
        }

        .step-item {
            background-color: var(--white);
            padding: 30px 20px;
            border-radius: 12px;
            text-align: center;
            position: relative;
            box-shadow: var(--shadow);
        }

        .step-num {
            width: 40px;
            height: 40px;
            background-color: var(--primary);
            color: var(--white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            margin: 0 auto 15px auto;
        }

        .step-item h3 {
            font-size: 16px;
            color: var(--secondary);
            margin-bottom: 8px;
        }

        .step-item p {
            font-size: 13px;
            color: var(--gray);
        }

        /* 对比评测表格 */
        .compare-section {
            background-color: var(--white);
        }

        .rating-box {
            background-color: var(--primary-light);
            border: 1px solid rgba(16, 185, 129, 0.2);
            border-radius: 12px;
            padding: 30px;
            text-align: center;
            max-width: 500px;
            margin: 0 auto 40px auto;
        }

        .rating-stars {
            color: #F59E0B;
            font-size: 24px;
            margin-bottom: 10px;
        }

        .rating-score {
            font-size: 48px;
            font-weight: 800;
            color: var(--secondary);
            line-height: 1;
        }

        .rating-label {
            font-size: 14px;
            color: var(--gray-dark);
            margin-top: 5px;
        }

        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border-radius: 12px;
            box-shadow: var(--shadow);
            border: 1px solid var(--gray-light);
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            background-color: var(--white);
            min-width: 700px;
        }

        .compare-table th, .compare-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--gray-light);
        }

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

        .compare-table tr:hover {
            background-color: var(--light);
        }

        .compare-table td.highlight {
            color: var(--primary-dark);
            font-weight: 600;
            background-color: rgba(16, 185, 129, 0.02);
        }

        /* Token 比价 */
        .token-section {
            background-color: var(--light);
        }

        .token-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .token-card {
            background-color: var(--white);
            border-radius: 12px;
            padding: 24px;
            border: 1px solid var(--gray-light);
            box-shadow: var(--shadow);
        }

        .token-card.popular {
            border-color: var(--primary);
            position: relative;
        }

        .token-card.popular::after {
            content: "超值推荐";
            position: absolute;
            top: 15px;
            right: 15px;
            background-color: var(--primary);
            color: var(--white);
            font-size: 11px;
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 600;
        }

        .token-name {
            font-size: 18px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 10px;
        }

        .token-price {
            font-size: 28px;
            font-weight: 800;
            color: var(--primary-dark);
            margin-bottom: 15px;
        }

        .token-price span {
            font-size: 13px;
            color: var(--gray);
            font-weight: 400;
        }

        .token-feats {
            list-style: none;
            font-size: 13px;
            color: var(--gray-dark);
        }

        .token-feats li {
            margin-bottom: 8px;
            padding-left: 15px;
            position: relative;
        }

        .token-feats li::before {
            content: "•";
            position: absolute;
            left: 0;
            color: var(--primary);
        }

        /* 培训中心 */
        .training-section {
            background-color: var(--white);
        }

        .training-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .training-card {
            background-color: var(--light);
            border-radius: 12px;
            padding: 30px;
            border: 1px solid var(--gray-light);
        }

        .training-card h3 {
            font-size: 20px;
            color: var(--secondary);
            margin-bottom: 15px;
            border-left: 4px solid var(--primary);
            padding-left: 12px;
        }

        .training-courses {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .course-item {
            background-color: var(--white);
            padding: 15px;
            border-radius: 8px;
            box-shadow: 0 2px 4px rgba(0,0,0,0.02);
        }

        .course-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 5px;
        }

        .course-desc {
            font-size: 13px;
            color: var(--gray);
        }

        /* 用户评论 */
        .comments-section {
            background-color: var(--light);
        }

        .comments-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .comment-card {
            background-color: var(--white);
            border-radius: 12px;
            padding: 24px;
            box-shadow: var(--shadow);
            border: 1px solid var(--gray-light);
        }

        .comment-text {
            font-size: 14px;
            color: var(--gray-dark);
            margin-bottom: 20px;
            font-style: italic;
        }

        .commenter-info {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .commenter-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: var(--primary-light);
            color: var(--primary-dark);
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
        }

        .commenter-details h4 {
            font-size: 14px;
            color: var(--secondary);
        }

        .commenter-details p {
            font-size: 12px;
            color: var(--gray);
        }

        /* 需求匹配表单区 */
        .form-section {
            background: linear-gradient(135deg, #ECFDF5 0%, #FFFFFF 100%);
        }

        .form-wrapper {
            max-width: 650px;
            margin: 0 auto;
            background-color: var(--white);
            border-radius: 16px;
            padding: 40px;
            box-shadow: var(--shadow);
            border: 1px solid rgba(16, 185, 129, 0.1);
        }

        .form-title {
            text-align: center;
            font-size: 24px;
            color: var(--secondary);
            margin-bottom: 30px;
            font-weight: 700;
        }

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

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

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid #D1D5DB;
            border-radius: 8px;
            font-size: 14px;
            color: var(--dark);
            outline: none;
            transition: var(--transition);
        }

        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
        }

        select.form-control {
            appearance: none;
            background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%234B5563' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 16px center;
            background-size: 16px;
        }

        .form-submit-btn {
            width: 100%;
            background-color: var(--primary);
            color: var(--white);
            padding: 14px;
            border-radius: 8px;
            border: none;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            box-shadow: 0 4px 10px rgba(16, 185, 129, 0.2);
            transition: var(--transition);
        }

        .form-submit-btn:hover {
            background-color: var(--primary-dark);
        }

        /* 帮助中心 & FAQ */
        .faq-section {
            background-color: var(--white);
        }

        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .faq-item {
            background-color: var(--light);
            border-radius: 8px;
            overflow: hidden;
            border: 1px solid var(--gray-light);
            transition: var(--transition);
        }

        .faq-header {
            padding: 20px;
            background-color: var(--white);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            color: var(--secondary);
            font-size: 15px;
            transition: var(--transition);
        }

        .faq-header:hover {
            background-color: var(--primary-light);
        }

        .faq-icon {
            font-size: 18px;
            color: var(--primary);
            transition: transform 0.3s;
        }

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

        .faq-content {
            padding: 20px;
            font-size: 14px;
            color: var(--gray-dark);
            border-top: 1px solid var(--gray-light);
        }

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

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

        /* AI术语百科 & 自助排查 */
        .trouble-section {
            background-color: var(--light);
        }

        .trouble-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

        .trouble-card {
            background-color: var(--white);
            border-radius: 12px;
            padding: 30px;
            box-shadow: var(--shadow);
        }

        .trouble-card h3 {
            font-size: 18px;
            color: var(--secondary);
            margin-bottom: 20px;
            border-bottom: 2px solid var(--primary-light);
            padding-bottom: 10px;
        }

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

        .trouble-list li {
            margin-bottom: 15px;
        }

        .trouble-list strong {
            display: block;
            font-size: 14px;
            color: var(--dark);
            margin-bottom: 4px;
        }

        .trouble-list span {
            font-size: 13px;
            color: var(--gray);
        }

        /* 知识库资讯 */
        .news-section {
            background-color: var(--white);
        }

        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .news-card {
            background-color: var(--white);
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--gray-light);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .news-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
        }

        .news-img-holder {
            height: 180px;
            background-color: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-dark);
            font-weight: 700;
            font-size: 16px;
        }

        .news-info {
            padding: 20px;
        }

        .news-date {
            font-size: 12px;
            color: var(--gray);
            margin-bottom: 8px;
        }

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

        .news-link {
            font-size: 13px;
            color: var(--primary-dark);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        /* 联系我们 & 浮动客服 */
        .contact-section {
            background-color: var(--light);
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
        }

        .contact-info-panel {
            background-color: var(--white);
            padding: 40px;
            border-radius: 12px;
            box-shadow: var(--shadow);
        }

        .contact-item {
            display: flex;
            align-items: flex-start;
            gap: 15px;
            margin-bottom: 25px;
        }

        .contact-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: var(--primary-light);
            color: var(--primary-dark);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
        }

        .contact-text h4 {
            font-size: 15px;
            color: var(--secondary);
            margin-bottom: 4px;
        }

        .contact-text p {
            font-size: 14px;
            color: var(--gray-dark);
        }

        .qr-panel {
            background-color: var(--white);
            padding: 30px;
            border-radius: 12px;
            box-shadow: var(--shadow);
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        }

        .qr-code {
            width: 160px;
            height: 160px;
            margin-bottom: 15px;
            border: 1px solid var(--gray-light);
            padding: 8px;
            border-radius: 8px;
        }

        .qr-code img {
            width: 100%;
            height: 100%;
            object-fit: contain;
        }

        .qr-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 5px;
        }

        .qr-desc {
            font-size: 13px;
            color: var(--gray);
        }

        /* 浮动工具栏 */
        .float-toolbar {
            position: fixed;
            bottom: 30px;
            right: 30px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            z-index: 999;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: var(--white);
            color: var(--secondary);
            box-shadow: 0 4px 10px rgba(0,0,0,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
            border: 1px solid var(--gray-light);
            font-weight: 700;
            position: relative;
        }

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

        .float-btn-kefu:hover .kefu-popover {
            opacity: 1;
            visibility: visible;
        }

        .kefu-popover {
            position: absolute;
            bottom: 60px;
            right: 0;
            width: 180px;
            background-color: var(--white);
            border-radius: 8px;
            box-shadow: var(--shadow);
            padding: 15px;
            border: 1px solid var(--gray-light);
            text-align: center;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            pointer-events: none;
        }

        .kefu-popover img {
            width: 100%;
            height: auto;
            border-radius: 4px;
        }

        .kefu-popover p {
            color: var(--dark);
            font-size: 12px;
            margin-top: 8px;
        }

        /* 页脚 */
        footer {
            background-color: #111827;
            color: #9CA3AF;
            padding: 60px 0 30px 0;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand h3 {
            color: var(--white);
            margin-bottom: 15px;
            font-size: 20px;
        }

        .footer-brand p {
            line-height: 1.8;
            margin-bottom: 15px;
        }

        .footer-links h4 {
            color: var(--white);
            margin-bottom: 15px;
            font-size: 16px;
        }

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

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

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

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 15px;
        }

        .friend-links a {
            background-color: rgba(255,255,255,0.05);
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 12px;
            color: #9CA3AF;
        }

        .friend-links a:hover {
            background-color: var(--primary);
            color: var(--white);
        }

        .footer-bottom {
            border-top: 1px solid #374151;
            padding-top: 25px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
        }

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .hero-features, .services-grid, .network-grid, .comments-grid, .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-container {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background-color: var(--white);
                padding: 20px;
                box-shadow: 0 4px 6px rgba(0,0,0,0.05);
                border-top: 1px solid var(--gray-light);
            }
            .nav-menu.show {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
            .hero-features, .services-grid, .network-grid, .comments-grid, .news-grid, .about-grid, .solutions-grid, .steps-container, .token-grid, .training-grid, .faq-grid, .trouble-grid, .contact-grid, .footer-grid {
                grid-template-columns: 1fr;
            }
            h1.hero-title {
                font-size: 2rem;
            }
            .hero-btns {
                flex-direction: column;
            }
        }