:root {
            --primary: #2563eb;       /* 科技蓝 */
            --accent: #f97316;        /* 亮丽橙 */
            --success: #10b981;       /* 极光绿 */
            --dark: #0f172a;          /* 深灰 */
            --light-bg: #f8fafc;      /* 浅灰底 */
            --white: #ffffff;
            --gray-border: #e2e8f0;
            --text-muted: #64748b;
            --max-width: 1200px;
        }

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

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

        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.3s ease;
        }

        /* 统一容器 */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
        }

        /* 标题设计 */
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-header h2 {
            font-size: 2.2rem;
            color: var(--dark);
            position: relative;
            display: inline-block;
            margin-bottom: 15px;
        }

        .section-header h2::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 2px;
        }

        .section-header p {
            color: var(--text-muted);
            font-size: 1.1rem;
        }

        /* 顶部导航 */
        header {
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(8px);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05);
            border-bottom: 1px solid var(--gray-border);
        }

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

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

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

        .nav-menu a {
            font-weight: 500;
            color: var(--dark);
            font-size: 0.95rem;
            padding: 5px 10px;
            border-radius: 4px;
        }

        .nav-menu a:hover {
            color: var(--primary);
            background-color: rgba(37, 99, 235, 0.05);
        }

        .nav-btns {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 22px;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            border: none;
            outline: none;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), #1e40af);
            color: var(--white);
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
        }

        .btn-accent {
            background: linear-gradient(135deg, var(--accent), #ea580c);
            color: var(--white);
            box-shadow: 0 4px 14px rgba(249, 115, 22, 0.3);
        }

        .btn-accent:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(249, 115, 22, 0.4);
        }

        /* 移动端菜单按钮 */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
        }

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

        /* Hero 区域（无图片设计） */
        .hero {
            background: radial-gradient(circle at 80% 20%, rgba(249, 115, 22, 0.08) 0%, transparent 50%),
                        radial-gradient(circle at 10% 80%, rgba(37, 99, 235, 0.08) 0%, transparent 50%),
                        var(--white);
            padding: 120px 0 90px;
            border-bottom: 1px solid var(--gray-border);
        }

        .hero-content {
            text-align: center;
            max-width: 900px;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: linear-gradient(90deg, rgba(37, 99, 235, 0.1), rgba(249, 115, 22, 0.1));
            color: var(--primary);
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 24px;
            border: 1px solid rgba(37, 99, 235, 0.15);
        }

        .hero h1 {
            font-size: 3.2rem;
            line-height: 1.25;
            margin-bottom: 24px;
            color: var(--dark);
            font-weight: 800;
        }

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

        .hero p {
            font-size: 1.25rem;
            color: var(--text-muted);
            margin-bottom: 40px;
            line-height: 1.8;
        }

        .hero-action-group {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
            margin-bottom: 60px;
        }

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 30px;
        }

        .stat-card {
            background: var(--white);
            padding: 25px 20px;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.03);
            border: 1px solid var(--gray-border);
            text-align: center;
            transition: all 0.3s ease;
        }

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

        .stat-number {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 5px;
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* 关于我们 & 平台介绍 */
        .section-padding {
            padding: 80px 0;
        }

        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
            color: var(--dark);
        }

        .about-text p {
            color: var(--text-muted);
            margin-bottom: 20px;
            font-size: 1.05rem;
        }

        .platform-features {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .platform-feature-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 15px;
            background: var(--white);
            border-radius: 8px;
            border-left: 4px solid var(--primary);
            box-shadow: 0 2px 10px rgba(0,0,0,0.02);
        }

        .platform-feature-item h4 {
            font-size: 1rem;
            color: var(--dark);
            margin-bottom: 4px;
        }

        .platform-feature-item p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin: 0;
        }

        /* 全平台AIGC服务 */
        .brand-section {
            background-color: var(--white);
            border-top: 1px solid var(--gray-border);
            border-bottom: 1px solid var(--gray-border);
        }

        .brand-scroll-wrapper {
            position: relative;
            overflow: hidden;
            padding: 30px 0;
        }

        .brand-list {
            display: flex;
            gap: 15px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .brand-badge {
            background-color: var(--light-bg);
            color: var(--dark);
            padding: 8px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid var(--gray-border);
            transition: all 0.2s ease;
        }

        .brand-badge:hover {
            border-color: var(--primary);
            color: var(--primary);
            background-color: var(--white);
        }

        /* 一站式AIGC制作 & 全行业解决方案 */
        .work-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .work-card {
            background-color: var(--white);
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0,0,0,0.04);
            border: 1px solid var(--gray-border);
            transition: all 0.3s ease;
        }

        .work-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 40px rgba(0,0,0,0.08);
            border-color: var(--primary);
        }

        .work-card-img-container {
            width: 100%;
            height: 200px;
            overflow: hidden;
            background-color: #f1f5f9;
        }

        .work-card-img-container img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .work-card:hover .work-card-img-container img {
            transform: scale(1.05);
        }

        .work-card-content {
            padding: 24px;
        }

        .work-card-tag {
            display: inline-block;
            font-size: 0.75rem;
            background-color: rgba(249, 115, 22, 0.1);
            color: var(--accent);
            padding: 4px 10px;
            border-radius: 4px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .work-card h3 {
            font-size: 1.3rem;
            margin-bottom: 10px;
            color: var(--dark);
        }

        .work-card p {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 15px;
        }

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

        .network-grid {
            display: grid;
            grid-template-columns: 1fr 2fr;
            gap: 40px;
            align-items: center;
        }

        .network-info h3 {
            font-size: 1.8rem;
            margin-bottom: 15px;
        }

        .network-info p {
            color: var(--text-muted);
            margin-bottom: 25px;
        }

        .network-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
        }

        .network-item {
            background: var(--light-bg);
            padding: 15px;
            border-radius: 8px;
            border: 1px solid var(--gray-border);
        }

        .network-item h4 {
            color: var(--primary);
            margin-bottom: 5px;
            font-size: 1rem;
        }

        .network-item p {
            font-size: 0.85rem;
            margin: 0;
            color: var(--dark);
        }

        .network-map-placeholder {
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.05), rgba(249, 115, 22, 0.05));
            border: 1px dashed var(--primary);
            border-radius: 16px;
            height: 350px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            text-align: center;
            padding: 20px;
        }

        .network-map-icon {
            font-size: 3rem;
            color: var(--primary);
            margin-bottom: 15px;
        }

        /* 标准化AIGC流程 */
        .timeline {
            position: relative;
            max-width: 900px;
            margin: 40px auto 0;
            padding: 20px 0;
        }

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

        .timeline-container {
            padding: 10px 40px;
            position: relative;
            background-color: inherit;
            width: 50%;
        }

        .timeline-container::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: all 0.3s ease;
        }

        .left {
            left: 0;
        }

        .right {
            left: 50%;
        }

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

        .timeline-content {
            padding: 20px 30px;
            background-color: var(--white);
            position: relative;
            border-radius: 12px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.03);
            border: 1px solid var(--gray-border);
        }

        .timeline-container:hover::after {
            background-color: var(--accent);
            border-color: var(--accent);
        }

        .timeline-content h3 {
            font-size: 1.15rem;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .timeline-content p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin: 0;
        }

        /* 技术标准 */
        .tech-standards {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 30px;
        }

        .standard-card {
            background: var(--white);
            padding: 25px;
            border-radius: 12px;
            border-top: 4px solid var(--accent);
            box-shadow: 0 4px 20px rgba(0,0,0,0.02);
            text-align: center;
        }

        .standard-card h4 {
            margin-bottom: 10px;
            font-size: 1.1rem;
            color: var(--dark);
        }

        .standard-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin: 0;
        }

        /* 客户案例中心 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .case-card {
            background: var(--white);
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0,0,0,0.03);
            border: 1px solid var(--gray-border);
        }

        .case-img-box {
            height: 220px;
            overflow: hidden;
        }

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

        .case-info {
            padding: 24px;
        }

        .case-info h4 {
            font-size: 1.2rem;
            margin-bottom: 8px;
            color: var(--dark);
        }

        .case-info p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 15px;
        }

        .case-meta {
            font-size: 0.8rem;
            color: var(--primary);
            font-weight: 600;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        /* 对比评测板块 */
        .eval-section {
            background-color: var(--white);
        }

        .eval-container {
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.02), rgba(249, 115, 22, 0.02));
            border-radius: 20px;
            padding: 40px;
            border: 1px solid var(--gray-border);
        }

        .eval-score-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 40px;
            flex-wrap: wrap;
            gap: 20px;
            border-bottom: 1px solid var(--gray-border);
            padding-bottom: 20px;
        }

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

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

        .score-text {
            font-size: 1rem;
            color: var(--text-muted);
        }

        .score-text span {
            display: block;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--dark);
        }

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

        .table-responsive {
            width: 100%;
            overflow-x: auto;
        }

        .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 var(--gray-border);
        }

        .compare-table th {
            font-weight: 700;
            color: var(--dark);
            background-color: rgba(37, 99, 235, 0.05);
        }

        .compare-table tr:hover {
            background-color: rgba(249, 115, 22, 0.02);
        }

        .compare-table td strong {
            color: var(--primary);
        }

        /* Token比价 & 职业技术培训 */
        .token-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: start;
        }

        .token-card {
            background: var(--white);
            border-radius: 16px;
            padding: 30px;
            border: 1px solid var(--gray-border);
            box-shadow: 0 4px 20px rgba(0,0,0,0.02);
        }

        .token-title {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 20px;
            border-left: 4px solid var(--accent);
            padding-left: 10px;
        }

        .token-item-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 12px 0;
            border-bottom: 1px dashed var(--gray-border);
        }

        .token-item-row:last-child {
            border-bottom: none;
        }

        .token-model-name {
            font-weight: 600;
            font-size: 0.95rem;
        }

        .token-price {
            color: var(--success);
            font-weight: 700;
        }

        /* 人工智能培训证书 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 30px;
        }

        .training-card {
            background: var(--white);
            border-radius: 12px;
            padding: 24px;
            border: 1px solid var(--gray-border);
            box-shadow: 0 4px 15px rgba(0,0,0,0.02);
            transition: all 0.3s ease;
        }

        .training-card:hover {
            border-color: var(--primary);
            transform: translateY(-4px);
        }

        .training-card h4 {
            font-size: 1.15rem;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .training-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 15px;
        }

        .training-badge {
            display: inline-block;
            background-color: rgba(37, 99, 235, 0.08);
            color: var(--primary);
            font-size: 0.75rem;
            padding: 4px 8px;
            border-radius: 4px;
            font-weight: 600;
        }

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

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

        .faq-question {
            padding: 20px;
            font-weight: 600;
            font-size: 1.05rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

        .faq-question::after {
            content: '+';
            font-size: 1.3rem;
            color: var(--text-muted);
            transition: transform 0.3s ease;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            padding: 0 20px;
            color: var(--text-muted);
            font-size: 0.95rem;
            border-top: 0 solid var(--gray-border);
        }

        .faq-item.active {
            border-color: var(--primary);
            box-shadow: 0 4px 15px rgba(0,0,0,0.03);
        }

        .faq-item.active .faq-question::after {
            content: '-';
            transform: rotate(180deg);
        }

        .faq-item.active .faq-answer {
            max-height: 200px;
            padding: 20px;
            border-top: 1px solid var(--gray-border);
        }

        /* 常见问题自助排查 */
        .troubleshoot-box {
            background-color: var(--white);
            border-radius: 16px;
            padding: 40px;
            border: 1px solid var(--gray-border);
            margin-top: 40px;
        }

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

        .flow-step {
            background: var(--light-bg);
            padding: 20px;
            border-radius: 8px;
            position: relative;
        }

        .flow-step-num {
            position: absolute;
            top: 10px;
            right: 15px;
            font-size: 1.8rem;
            font-weight: 900;
            color: rgba(37, 99, 235, 0.1);
        }

        .flow-step h4 {
            margin-bottom: 8px;
            font-size: 1.05rem;
        }

        .flow-step p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin: 0;
        }

        /* AI术语百科 & 标签云 */
        .wiki-section {
            background-color: var(--white);
        }

        .wiki-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .wiki-cards {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
        }

        .wiki-card {
            background: var(--light-bg);
            padding: 20px;
            border-radius: 10px;
            border: 1px solid var(--gray-border);
        }

        .wiki-card h4 {
            color: var(--accent);
            margin-bottom: 8px;
        }

        .wiki-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin: 0;
        }

        .tag-cloud-box h3 {
            font-size: 1.4rem;
            margin-bottom: 20px;
        }

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

        .cloud-tag {
            background: var(--light-bg);
            color: var(--dark);
            padding: 8px 14px;
            border-radius: 6px;
            font-size: 0.85rem;
            border: 1px solid var(--gray-border);
            font-weight: 550;
        }

        /* 客户评论卡片 */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-top: 30px;
        }

        .comment-card {
            background: var(--white);
            padding: 30px;
            border-radius: 16px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.02);
            border: 1px solid var(--gray-border);
            position: relative;
        }

        .comment-quote {
            font-size: 2.5rem;
            color: rgba(249, 115, 22, 0.1);
            position: absolute;
            top: 15px;
            left: 20px;
            line-height: 1;
        }

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

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

        .user-info h5 {
            font-size: 0.95rem;
            color: var(--dark);
            margin: 0;
        }

        .user-info span {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        /* 智能需求匹配与表单设计 */
        .form-section {
            background-color: var(--white);
        }

        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .form-info h3 {
            font-size: 2rem;
            margin-bottom: 20px;
        }

        .form-info p {
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .form-box {
            background: var(--light-bg);
            padding: 40px;
            border-radius: 20px;
            border: 1px solid var(--gray-border);
            box-shadow: 0 10px 30px rgba(0,0,0,0.02);
        }

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

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            font-size: 0.9rem;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border-radius: 8px;
            border: 1px solid var(--gray-border);
            background-color: var(--white);
            color: var(--dark);
            outline: none;
            transition: all 0.3s ease;
        }

        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
        }

        /* 行业资讯 / 知识库 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .news-card {
            background: var(--white);
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--gray-border);
            box-shadow: 0 4px 15px rgba(0,0,0,0.02);
            transition: transform 0.3s ease;
        }

        .news-card:hover {
            transform: translateY(-4px);
        }

        .news-content {
            padding: 24px;
        }

        .news-date {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-bottom: 10px;
            display: block;
        }

        .news-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .news-title a {
            color: var(--dark);
        }

        .news-title a:hover {
            color: var(--primary);
        }

        .news-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* 加盟代理模块 */
        .agent-section {
            background: linear-gradient(135deg, var(--dark) 0%, #1e293b 100%);
            color: var(--white);
            padding: 80px 0;
            text-align: center;
        }

        .agent-section h2 {
            font-size: 2.2rem;
            margin-bottom: 20px;
            color: var(--white);
        }

        .agent-section p {
            color: #94a3b8;
            max-width: 600px;
            margin: 0 auto 40px;
        }

        .agent-benefits {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            max-width: 900px;
            margin: 0 auto 40px;
        }

        .benefit-item {
            background: rgba(255, 255, 255, 0.05);
            padding: 25px;
            border-radius: 12px;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .benefit-item h4 {
            color: var(--accent);
            margin-bottom: 10px;
            font-size: 1.15rem;
        }

        .benefit-item p {
            font-size: 0.85rem;
            color: #cbd5e1;
            margin: 0;
        }

        /* 友情链接与底部导航 */
        footer {
            background-color: #0f172a;
            color: #94a3b8;
            padding: 60px 0 30px;
            border-top: 1px solid #1e293b;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand p {
            margin-top: 15px;
            font-size: 0.9rem;
            line-height: 1.6;
        }

        .footer-title {
            color: var(--white);
            font-weight: 700;
            margin-bottom: 20px;
            font-size: 1rem;
        }

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

        .footer-links li {
            margin-bottom: 12px;
        }

        .footer-links a {
            font-size: 0.9rem;
            color: #94a3b8;
        }

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

        .footer-contact-info {
            font-size: 0.9rem;
            line-height: 1.8;
        }

        .footer-contact-info span {
            display: block;
            margin-bottom: 8px;
        }

        .friend-links-box {
            border-top: 1px solid #1e293b;
            border-bottom: 1px solid #1e293b;
            padding: 20px 0;
            margin-bottom: 20px;
            font-size: 0.85rem;
        }

        .friend-links-box span {
            color: var(--white);
            font-weight: 600;
            margin-right: 15px;
        }

        .friend-links-box a {
            color: #94a3b8;
            margin-right: 15px;
            display: inline-block;
        }

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

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
            font-size: 0.8rem;
            color: #64748b;
        }

        /* 浮动客服入口 */
        .float-kefu {
            position: fixed;
            right: 20px;
            bottom: 40px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .float-item {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: var(--white);
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
            display: flex;
            justify-content: center;
            align-items: center;
            cursor: pointer;
            position: relative;
            transition: all 0.3s ease;
            border: 1px solid var(--gray-border);
        }

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

        .float-item-icon {
            font-size: 1.2rem;
            font-weight: 700;
        }

        .qr-popover {
            position: absolute;
            right: 60px;
            bottom: 0;
            background: var(--white);
            padding: 15px;
            border-radius: 12px;
            box-shadow: 0 5px 25px rgba(0,0,0,0.15);
            display: none;
            width: 160px;
            text-align: center;
            border: 1px solid var(--gray-border);
        }

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

        .qr-popover span {
            font-size: 0.75rem;
            color: var(--dark);
            font-weight: 600;
        }

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

        /* 响应式适配 */
        @media (max-width: 1024px) {
            .stats-grid, .work-grid, .case-grid, .training-grid, .comments-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .about-grid, .network-grid, .token-grid, .wiki-grid, .form-grid, .footer-grid {
                grid-template-columns: 1fr;
            }
            .network-map-placeholder {
                height: 280px;
            }
        }

        @media (max-width: 768px) {
            .hero h1 {
                font-size: 2.2rem;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: var(--white);
                flex-direction: column;
                padding: 20px;
                box-shadow: 0 10px 15px rgba(0,0,0,0.05);
                border-bottom: 1px solid var(--gray-border);
            }
            .nav-menu.active {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
            .stats-grid, .work-grid, .case-grid, .training-grid, .comments-grid, .troubleshoot-flow {
                grid-template-columns: 1fr;
            }
            .timeline::after {
                left: 31px;
            }
            .timeline-container {
                width: 100%;
                padding-left: 70px;
                padding-right: 25px;
            }
            .timeline-container::after {
                left: 21px;
            }
            .right {
                left: 0%;
            }
            .tech-standards {
                grid-template-columns: repeat(2, 1fr);
            }
            .form-box {
                padding: 20px;
            }
        }

        @media (max-width: 480px) {
            .tech-standards {
                grid-template-columns: 1fr;
            }
        }