/* 艳色潮流风：高饱和霓虹渐变点缀，浅色背景保障极佳可读性 */
        :root {
            --primary-gradient: linear-gradient(135deg, #6366f1, #a855f7, #ec4899);
            --neon-pink: #ec4899;
            --neon-indigo: #6366f1;
            --neon-purple: #a855f7;
            --dark-text: #0f172a;
            --light-text: #475569;
            --bg-main: #f8fafc;
            --bg-card: #ffffff;
            --border-color: #e2e8f0;
            --max-width: 1200px;
        }

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

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

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

        /* 顶部导航 */
        header {
            position: sticky;
            top: 0;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
        }

        .nav-container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 1rem 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

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

        .nav-menu {
            display: flex;
            gap: 1.5rem;
            align-items: center;
        }

        .nav-link {
            font-weight: 500;
            color: var(--light-text);
            font-size: 0.95rem;
        }

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

        .nav-btn {
            background: var(--primary-gradient);
            color: #fff !important;
            padding: 0.5rem 1.2rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            box-shadow: 0 4px 15px rgba(168, 85, 247, 0.2);
            transition: transform 0.2s, box-shadow 0.2s;
        }

        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(168, 85, 247, 0.35);
        }

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--dark-text);
        }

        /* 主容器结构 */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        section {
            padding: 5rem 0;
            border-bottom: 1px solid var(--border-color);
        }

        .section-title {
            text-align: center;
            margin-bottom: 3.5rem;
        }

        .section-title h2 {
            font-size: 2.2rem;
            font-weight: 800;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            display: inline-block;
            margin-bottom: 0.75rem;
        }

        .section-title p {
            color: var(--light-text);
            font-size: 1.1rem;
            max-width: 700px;
            margin: 0 auto;
        }

        /* 1. 首页 Hero 区域 (无背景图，浅色极简科技风格) */
        .hero-section {
            position: relative;
            padding: 7rem 0 6rem 0;
            text-align: center;
            overflow: hidden;
            background: radial-gradient(circle at top right, rgba(168, 85, 247, 0.05), transparent 60%),
                        radial-gradient(circle at bottom left, rgba(99, 102, 241, 0.05), transparent 60%);
        }

        .hero-badge {
            background: rgba(99, 102, 241, 0.08);
            color: var(--neon-indigo);
            padding: 0.4rem 1.2rem;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 700;
            display: inline-block;
            margin-bottom: 1.5rem;
            border: 1px dashed rgba(99, 102, 241, 0.3);
        }

        .hero-h1 {
            font-size: 3rem;
            font-weight: 900;
            line-height: 1.2;
            color: var(--dark-text);
            max-width: 900px;
            margin: 0 auto 1.5rem auto;
            letter-spacing: -0.5px;
        }

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

        .hero-desc {
            font-size: 1.25rem;
            color: var(--light-text);
            max-width: 700px;
            margin: 0 auto 2.5rem auto;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 1.2rem;
            flex-wrap: wrap;
            margin-bottom: 3.5rem;
        }

        .btn-primary {
            background: var(--primary-gradient);
            color: #fff;
            padding: 1rem 2.2rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.05rem;
            box-shadow: 0 10px 25px rgba(168, 85, 247, 0.25);
            transition: all 0.3s;
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 35px rgba(168, 85, 247, 0.4);
        }

        .btn-secondary {
            background: #ffffff;
            color: var(--dark-text);
            border: 2px solid var(--border-color);
            padding: 1rem 2.2rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.05rem;
            transition: all 0.3s;
        }

        .btn-secondary:hover {
            border-color: var(--neon-indigo);
            color: var(--neon-indigo);
            transform: translateY(-3px);
        }

        /* 核心数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 1.5rem;
            max-width: 900px;
            margin: 0 auto;
        }

        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 1.5rem;
            border-radius: 16px;
            box-shadow: 0 4px 10px rgba(0,0,0,0.02);
            transition: transform 0.3s, border-color 0.3s;
        }

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

        .stat-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--neon-purple);
            margin-bottom: 0.25rem;
        }

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

        /* 2. 关于我们 */
        .about-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 4rem;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.8rem;
            margin-bottom: 1.2rem;
            color: var(--dark-text);
        }

        .about-text p {
            color: var(--light-text);
            margin-bottom: 1.5rem;
            font-size: 1.05rem;
            line-height: 1.7;
        }

        .about-features {
            list-style: none;
        }

        .about-features li {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            margin-bottom: 0.75rem;
            font-weight: 600;
        }

        .about-features li::before {
            content: "✓";
            color: var(--neon-pink);
            font-weight: 800;
            background: rgba(236, 72, 153, 0.1);
            width: 24px;
            height: 24px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            font-size: 0.8rem;
        }

        .company-profile-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 2.5rem;
            border-radius: 24px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.03);
            border-left: 6px solid var(--neon-indigo);
        }

        .company-profile-card h4 {
            font-size: 1.4rem;
            margin-bottom: 1rem;
        }

        .company-profile-card table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }

        .company-profile-card td {
            padding: 0.6rem 0;
            border-bottom: 1px solid #f1f5f9;
        }

        .company-profile-card td:first-child {
            font-weight: 700;
            color: var(--light-text);
            width: 35%;
        }

        /* 3. 全平台AIGC服务 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 2rem;
        }

        .service-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 2.5rem 2rem;
            border-radius: 20px;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

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

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 30px rgba(99, 102, 241, 0.1);
            border-color: rgba(99, 102, 241, 0.3);
        }

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

        .service-icon {
            width: 50px;
            height: 50px;
            background: rgba(168, 85, 247, 0.1);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
            color: var(--neon-purple);
        }

        .service-card h3 {
            font-size: 1.25rem;
            margin-bottom: 0.75rem;
        }

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

        .model-list-wrap {
            margin-top: 4rem;
            text-align: center;
        }

        .model-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 0.5rem;
            margin-top: 1.5rem;
        }

        .model-tag {
            background: #fff;
            border: 1px solid var(--border-color);
            padding: 0.35rem 0.9rem;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            transition: all 0.2s;
        }

        .model-tag:hover {
            border-color: var(--neon-indigo);
            background: rgba(99, 102, 241, 0.04);
            color: var(--neon-indigo);
        }

        /* 4. 一站式AIGC制作场景 */
        .scene-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 2rem;
        }

        .scene-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 20px;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: transform 0.3s;
        }

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

        .scene-img-holder {
            height: 180px;
            background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(236, 72, 153, 0.1));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 3rem;
        }

        .scene-body {
            padding: 1.5rem;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .scene-body h3 {
            font-size: 1.25rem;
            margin-bottom: 0.5rem;
        }

        .scene-body p {
            color: var(--light-text);
            font-size: 0.9rem;
            margin-bottom: 1rem;
        }

        .scene-meta {
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--neon-pink);
            background: rgba(236, 72, 153, 0.05);
            padding: 0.3rem 0.75rem;
            border-radius: 4px;
            align-self: flex-start;
        }

        /* 5. 全行业解决方案 */
        .solution-tabs-wrap {
            display: flex;
            gap: 2rem;
            margin-top: 2rem;
        }

        .solution-sidebar {
            flex-shrink: 0;
            width: 250px;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

        .sol-tab-btn {
            background: #fff;
            border: 1px solid var(--border-color);
            padding: 1rem;
            border-radius: 12px;
            text-align: left;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
        }

        .sol-tab-btn.active, .sol-tab-btn:hover {
            background: var(--primary-gradient);
            color: #fff;
            border-color: transparent;
        }

        .solution-content {
            flex-grow: 1;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 2.5rem;
            border-radius: 20px;
        }

        .sol-panel {
            display: none;
        }

        .sol-panel.active {
            display: block;
            animation: fadeIn 0.4s ease;
        }

        /* 6. 全国服务网络 */
        .network-grid {
            display: grid;
            grid-template-columns: 1fr 1.5fr;
            gap: 4rem;
            align-items: center;
        }

        .map-mockup {
            background: linear-gradient(135deg, rgba(99,102,241,0.05), rgba(236,72,153,0.05));
            border: 1px dashed var(--border-color);
            border-radius: 24px;
            padding: 3rem;
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }

        .map-point {
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .map-dot {
            width: 12px;
            height: 12px;
            background: var(--neon-pink);
            border-radius: 50%;
            position: relative;
            box-shadow: 0 0 10px var(--neon-pink);
        }

        .map-dot::after {
            content: '';
            position: absolute;
            width: 24px;
            height: 24px;
            border: 2px solid var(--neon-pink);
            border-radius: 50%;
            top: -6px;
            left: -6px;
            animation: pulse 2s infinite;
        }

        /* 7. 标准化AIGC流程 */
        .process-flow {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 2rem;
            position: relative;
        }

        .process-step {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 2rem;
            border-radius: 16px;
            position: relative;
            z-index: 2;
        }

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

        /* 8. 技术标准 */
        .tech-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }

        .tech-card {
            background: #fff;
            padding: 2rem;
            border-radius: 16px;
            border: 1px solid var(--border-color);
        }

        .tech-card h4 {
            font-size: 1.15rem;
            margin-bottom: 0.75rem;
            color: var(--dark-text);
        }

        .tech-card p {
            font-size: 0.9rem;
            color: var(--light-text);
        }

        /* 9. 客户案例中心 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 2.5rem;
        }

        .case-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 20px;
            overflow: hidden;
            box-shadow: 0 4px 15px rgba(0,0,0,0.01);
            transition: transform 0.3s;
        }

        .case-card:hover {
            transform: translateY(-6px);
        }

        .case-img-container {
            width: 100%;
            overflow: hidden;
            background: #f1f5f9;
        }

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

        .case-info {
            padding: 1.75rem;
        }

        .case-tag {
            color: var(--neon-indigo);
            font-weight: 700;
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            display: inline-block;
            margin-bottom: 0.5rem;
        }

        .case-title {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }

        .case-summary {
            color: var(--light-text);
            font-size: 0.92rem;
            line-height: 1.6;
        }

        /* 10. 对比评测 */
        .evaluation-box {
            background: var(--bg-card);
            border: 2px solid var(--border-color);
            border-radius: 24px;
            padding: 3rem;
            margin-top: 2rem;
            box-shadow: 0 10px 30px rgba(0,0,0,0.02);
        }

        .eval-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 1.5rem;
            margin-bottom: 2rem;
            flex-wrap: wrap;
            gap: 1.5rem;
        }

        .score-wrap {
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .score-num {
            font-size: 3rem;
            font-weight: 900;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .score-stars {
            color: #f59e0b;
            font-size: 1.5rem;
        }

        .eval-table-wrapper {
            overflow-x: auto;
        }

        .eval-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 600px;
        }

        .eval-table th, .eval-table td {
            padding: 1.2rem;
            border-bottom: 1px solid var(--border-color);
        }

        .eval-table th {
            font-weight: 700;
            background: #f8fafc;
        }

        .eval-table td strong {
            color: var(--neon-indigo);
        }

        /* 11. 智能需求匹配 (表单) */
        .form-section {
            background: radial-gradient(circle at bottom right, rgba(236, 72, 153, 0.03), transparent), #ffffff;
        }

        .form-wrapper {
            max-width: 700px;
            margin: 0 auto;
            background: #ffffff;
            border: 1px solid var(--border-color);
            padding: 3rem;
            border-radius: 24px;
            box-shadow: 0 15px 40px rgba(0,0,0,0.04);
        }

        .form-group {
            margin-bottom: 1.5rem;
        }

        .form-label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            font-size: 0.95rem;
        }

        .form-control {
            width: 100%;
            padding: 0.85rem 1.2rem;
            border: 1.5px solid var(--border-color);
            border-radius: 12px;
            font-size: 1rem;
            outline: none;
            transition: border-color 0.3s;
        }

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

        /* 12. Token 比价参考 */
        .token-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.5rem;
        }

        .token-card {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 2rem;
            text-align: center;
        }

        .token-card h4 {
            font-size: 1.3rem;
            margin-bottom: 0.5rem;
        }

        .token-price {
            font-size: 2rem;
            font-weight: 800;
            color: var(--neon-indigo);
            margin: 1rem 0;
        }

        /* 13. & 14. 培训系列 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 1.5rem;
        }

        .train-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 2rem;
            text-align: center;
            transition: all 0.3s;
        }

        .train-card:hover {
            border-color: var(--neon-purple);
            transform: translateY(-5px);
        }

        .train-icon {
            font-size: 2rem;
            margin-bottom: 1rem;
        }

        /* 15. & 16. & 17. 帮助中心与 FAQ */
        .faq-grid {
            max-width: 850px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            overflow: hidden;
        }

        .faq-question {
            width: 100%;
            padding: 1.25rem 1.5rem;
            text-align: left;
            background: none;
            border: none;
            font-size: 1.05rem;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--dark-text);
        }

        .faq-question::after {
            content: '+';
            font-size: 1.3rem;
            font-weight: 400;
            transition: transform 0.3s;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            padding: 0 1.5rem;
            color: var(--light-text);
            font-size: 0.95rem;
        }

        .faq-item.active .faq-answer {
            padding: 0 1.5rem 1.5rem 1.5rem;
        }

        /* 自助排查工具 */
        .troubleshoot-tool {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: 20px;
            padding: 2.5rem;
            max-width: 850px;
            margin: 3rem auto 0 auto;
        }

        .troubleshoot-tabs {
            display: flex;
            gap: 1rem;
            margin-bottom: 1.5rem;
            flex-wrap: wrap;
        }

        .ts-tab {
            background: #f1f5f9;
            padding: 0.5rem 1.2rem;
            border-radius: 8px;
            border: none;
            cursor: pointer;
            font-weight: 600;
        }

        .ts-tab.active {
            background: var(--neon-indigo);
            color: #fff;
        }

        .ts-content {
            display: none;
            padding: 1rem;
            background: #f8fafc;
            border-radius: 8px;
        }

        .ts-content.active {
            display: block;
        }

        /* 18. AI 术语百科 */
        .ency-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 1.5rem;
        }

        .ency-card {
            background: #fff;
            padding: 1.5rem;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

        .ency-card strong {
            color: var(--neon-pink);
            display: block;
            margin-bottom: 0.5rem;
        }

        /* 19. 行业资讯 / 知识库 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 2rem;
        }

        .news-card {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 2rem;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .news-title {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }

        .news-link {
            color: var(--neon-indigo);
            font-weight: 600;
            margin-top: 1rem;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }

        /* 6条用户评论 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 2rem;
        }

        .review-card {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: 20px;
            padding: 2rem;
            box-shadow: 0 4px 10px rgba(0,0,0,0.01);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .review-text {
            font-style: italic;
            color: var(--light-text);
            margin-bottom: 1.5rem;
            font-size: 0.95rem;
        }

        .review-user {
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .user-avatar {
            width: 45px;
            height: 45px;
            background: var(--primary-gradient);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: bold;
        }

        /* 20. 联系我们 & 21. 加盟代理 */
        .contact-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 4rem;
        }

        .agent-card {
            background: linear-gradient(135deg, rgba(99, 102, 241, 0.05), rgba(236, 72, 153, 0.05));
            border: 2px solid var(--neon-purple);
            padding: 2.5rem;
            border-radius: 24px;
        }

        .contact-methods {
            margin-top: 2rem;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .contact-item {
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .kefu-qr-wrap {
            max-width: 150px;
            margin-top: 1.5rem;
        }

        .kefu-qr-wrap img {
            width: 100%;
            height: auto;
            border-radius: 8px;
            border: 1px solid var(--border-color);
        }

        /* 页脚 */
        footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 4rem 0 2rem 0;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2.5rem;
            margin-bottom: 3rem;
        }

        .footer-col h5 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 1.2rem;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .footer-links a:hover {
            color: #fff;
        }

        .friend-links-wrap {
            border-top: 1px solid #1e293b;
            padding-top: 2rem;
            margin-top: 2rem;
        }

        .friend-links-wrap a {
            margin-right: 1.2rem;
            display: inline-block;
            color: #64748b;
        }

        .friend-links-wrap a:hover {
            color: #fff;
        }

        .copyright-bar {
            text-align: center;
            border-top: 1px solid #1e293b;
            padding-top: 1.5rem;
            margin-top: 2rem;
            color: #475569;
        }

        /* 浮动客服 */
        .floating-kefu {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            z-index: 999;
            background: var(--primary-gradient);
            color: #fff;
            width: 60px;
            height: 60px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 10px 25px rgba(0,0,0,0.2);
            cursor: pointer;
        }

        .kefu-popup {
            position: absolute;
            bottom: 75px;
            right: 0;
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 1rem;
            width: 220px;
            box-shadow: 0 15px 35px rgba(0,0,0,0.1);
            display: none;
            text-align: center;
            color: var(--dark-text);
        }

        .kefu-popup.show {
            display: block;
            animation: fadeInUp 0.3s ease;
        }

        .kefu-popup img {
            width: 120px;
            height: 120px;
            margin-top: 0.5rem;
        }

        /* 动画库 */
        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }

        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }

        @keyframes pulse {
            0% { transform: scale(1); opacity: 1; }
            100% { transform: scale(2); opacity: 0; }
        }

        /* 移动端适配 */
        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: #fff;
                padding: 1.5rem;
                border-bottom: 1px solid var(--border-color);
                box-shadow: 0 10px 20px rgba(0,0,0,0.05);
            }

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

            .menu-toggle {
                display: block;
            }

            .hero-h1 {
                font-size: 2.2rem;
            }

            .about-grid, .network-grid, .contact-grid {
                grid-template-columns: 1fr;
                gap: 2.5rem;
            }

            .solution-tabs-wrap {
                flex-direction: column;
            }

            .solution-sidebar {
                width: 100%;
            }

            .floating-kefu {
                bottom: 1.5rem;
                right: 1.5rem;
            }
        }