/* 亮紫绚烂风 核心设计语言定义 */
        :root {
            --primary: #8A2BE2; /* 亮紫 */
            --primary-light: #F3EFFB; /* 极浅紫 */
            --primary-glow: #DA70D6; /* 兰花紫 */
            --accent: #4B0082; /* 靛紫 */
            --dark: #1A0933; /* 极深紫黑 */
            --body: #4A3B5C; /* 深紫灰 */
            --light: #FAF8FE; /* 背景米白 */
            --white: #FFFFFF;
            --gray-100: #F3F1F6;
            --gray-200: #E7E3ED;
            --shadow: 0 10px 30px rgba(138, 43, 226, 0.08);
            --shadow-hover: 0 15px 40px rgba(138, 43, 226, 0.16);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
        }

        /* 基础重置 */
        *, *::before, *::after {
            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);
            color: var(--body);
            line-height: 1.6;
            overflow-x: hidden;
        }

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

        a:hover {
            color: var(--accent);
        }

        /* 统一外层居中容器 */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 标题层级 */
        h1, h2, h3, h4 {
            color: var(--dark);
            font-weight: 700;
            line-height: 1.3;
        }

        .section-title {
            text-align: center;
            font-size: 2.2rem;
            margin-bottom: 12px;
            background: linear-gradient(135deg, var(--dark) 0%, var(--primary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .section-subtitle {
            text-align: center;
            font-size: 1.1rem;
            color: var(--body);
            margin-bottom: 50px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        /* 按钮样式 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: 8px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            gap: 8px;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-glow) 100%);
            color: var(--white);
            box-shadow: 0 4px 15px rgba(138, 43, 226, 0.25);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(138, 43, 226, 0.35);
        }

        .btn-outline {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
        }

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

        /* 顶部导航 */
        .header {
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            border-bottom: 1px solid var(--gray-200);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.02);
        }

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

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

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

        .logo-text {
            font-size: 1.3rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

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

        .nav-link {
            font-size: 0.95rem;
            color: var(--body);
            font-weight: 500;
            padding: 8px 12px;
            border-radius: 4px;
        }

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

        .nav-btn-group {
            display: flex;
            align-items: center;
            gap: 12px;
        }

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

        /* 页面主要区块间距 */
        section {
            padding: 80px 0;
        }

        /* Hero 首屏 (无图片设计) */
        .hero-section {
            padding: 160px 0 100px 0;
            background: radial-gradient(circle at 10% 20%, rgba(243, 239, 251, 0.8) 0%, rgba(255, 255, 255, 1) 90%);
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        /* 纯CSS科技感装饰元素 */
        .hero-bg-glow {
            position: absolute;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(138, 43, 226, 0.15) 0%, rgba(138, 43, 226, 0) 70%);
            border-radius: 50%;
            top: 10%;
            left: 5%;
            z-index: 1;
            filter: blur(40px);
        }
        .hero-bg-glow-right {
            position: absolute;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(218, 112, 214, 0.12) 0%, rgba(218, 112, 214, 0) 70%);
            border-radius: 50%;
            bottom: 10%;
            right: 5%;
            z-index: 1;
            filter: blur(50px);
        }

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

        .hero-tag {
            display: inline-block;
            padding: 6px 16px;
            background-color: var(--primary-light);
            color: var(--primary);
            font-weight: 600;
            font-size: 0.85rem;
            border-radius: 50px;
            margin-bottom: 24px;
            border: 1px dashed var(--primary-glow);
        }

        .hero-title {
            font-size: 3rem;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, var(--dark) 0%, var(--primary) 50%, var(--primary-glow) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 1.25rem;
            color: var(--body);
            margin-bottom: 36px;
            line-height: 1.8;
        }

        .hero-cta {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 40px;
        }

        /* 滚动提示与微小统计 */
        .hero-stats-bar {
            display: flex;
            justify-content: center;
            gap: 40px;
            border-top: 1px solid var(--gray-200);
            padding-top: 30px;
            flex-wrap: wrap;
        }

        .hero-stat-item {
            text-align: left;
        }

        .hero-stat-num {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary);
        }

        .hero-stat-label {
            font-size: 0.85rem;
            color: var(--body);
        }

        /* 关于我们与平台介绍 */
        .about-section {
            background-color: var(--white);
            border-bottom: 1px solid var(--gray-100);
        }

        .about-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 50px;
            align-items: center;
        }

        .about-info h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
            position: relative;
            padding-left: 15px;
        }

        .about-info h3::before {
            content: '';
            position: absolute;
            left: 0;
            top: 6px;
            bottom: 6px;
            width: 4px;
            background: var(--primary);
            border-radius: 2px;
        }

        .about-info p {
            margin-bottom: 20px;
            font-size: 1.05rem;
        }

        .feature-bullets {
            list-style: none;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin-top: 24px;
        }

        .feature-bullets li {
            position: relative;
            padding-left: 24px;
            font-size: 0.95rem;
            font-weight: 500;
        }

        .feature-bullets li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--primary);
            font-weight: bold;
        }

        .about-badge-card {
            background: linear-gradient(135deg, var(--primary-light) 0%, var(--white) 100%);
            border: 1px solid var(--gray-200);
            padding: 40px;
            border-radius: 16px;
            box-shadow: var(--shadow);
            position: relative;
        }

        /* 平台支持模型图标墙 */
        .model-cloud-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--dark);
        }

        .model-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .model-tag {
            background-color: var(--white);
            border: 1px solid var(--gray-200);
            color: var(--body);
            padding: 4px 12px;
            font-size: 0.8rem;
            border-radius: 50px;
            font-weight: 500;
            transition: var(--transition);
        }

        .model-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: scale(1.05);
        }

        /* 服务能力卡片 */
        .services-section {
            background-color: var(--light);
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .service-card {
            background-color: var(--white);
            border: 1px solid var(--gray-100);
            border-radius: 12px;
            padding: 30px;
            transition: var(--transition);
            box-shadow: var(--shadow);
        }

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

        .service-icon {
            width: 48px;
            height: 48px;
            background-color: var(--primary-light);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.5rem;
            margin-bottom: 20px;
        }

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

        .service-card p {
            font-size: 0.9rem;
            color: var(--body);
        }

        /* 一站式制作 & 行业解决方案 */
        .solutions-section {
            background-color: var(--white);
        }

        .solutions-tabs-container {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }

        .solutions-tabs-nav {
            display: flex;
            justify-content: center;
            gap: 12px;
            overflow-x: auto;
            padding-bottom: 10px;
        }

        .tab-btn {
            background-color: var(--gray-100);
            border: none;
            padding: 10px 20px;
            border-radius: 50px;
            color: var(--body);
            font-weight: 600;
            cursor: pointer;
            white-space: nowrap;
            transition: var(--transition);
        }

        .tab-btn.active, .tab-btn:hover {
            background-color: var(--primary);
            color: var(--white);
        }

        .solutions-tabs-content {
            background-color: var(--light);
            border-radius: 16px;
            padding: 40px;
            border: 1px solid var(--gray-200);
        }

        .tab-panel {
            display: none;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
            align-items: center;
        }

        .tab-panel.active {
            display: grid;
        }

        /* 标准化流程 & 技术标准 */
        .process-section {
            background-color: var(--light);
        }

        .timeline {
            position: relative;
            max-width: 900px;
            margin: 0 auto;
            padding: 20px 0;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 2px;
            background-color: var(--gray-200);
            transform: translateX(-50%);
        }

        .timeline-item {
            position: relative;
            width: 50%;
            padding: 20px 40px;
            box-sizing: border-box;
        }

        .timeline-item:nth-child(odd) {
            left: 0;
            text-align: right;
        }

        .timeline-item:nth-child(even) {
            left: 50%;
            text-align: left;
        }

        .timeline-badge {
            position: absolute;
            top: 25px;
            width: 16px;
            height: 16px;
            background-color: var(--primary);
            border: 4px solid var(--white);
            border-radius: 50%;
            z-index: 2;
        }

        .timeline-item:nth-child(odd) .timeline-badge {
            right: -8px;
        }

        .timeline-item:nth-child(even) .timeline-badge {
            left: -8px;
        }

        .timeline-card {
            background-color: var(--white);
            padding: 24px;
            border-radius: 10px;
            box-shadow: var(--shadow);
            border: 1px solid var(--gray-100);
        }

        .timeline-num {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary-glow);
            margin-bottom: 8px;
        }

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

        .rating-box {
            background: linear-gradient(135deg, var(--dark) 0%, var(--accent) 100%);
            color: var(--white);
            padding: 40px;
            border-radius: 16px;
            text-align: center;
            max-width: 400px;
            margin: 0 auto 50px auto;
            box-shadow: var(--shadow-hover);
        }

        .rating-stars {
            color: #FFD700;
            font-size: 2rem;
            margin-bottom: 12px;
        }

        .rating-score {
            font-size: 3.5rem;
            font-weight: 800;
            line-height: 1;
            margin-bottom: 6px;
        }

        .rating-score span {
            font-size: 1.5rem;
            opacity: 0.7;
        }

        .table-responsive {
            width: 100%;
            overflow-x: auto;
            background-color: var(--white);
            border-radius: 12px;
            box-shadow: var(--shadow);
            border: 1px solid var(--gray-200);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 700px;
        }

        .comparison-table th, .comparison-table td {
            padding: 16px 24px;
            border-bottom: 1px solid var(--gray-100);
        }

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

        .comparison-table tr:last-child td {
            border-bottom: none;
        }

        .comparison-table .highlight-row {
            background-color: rgba(138, 43, 226, 0.03);
            font-weight: 500;
        }

        .comparison-table .badge-yes {
            color: #2e7d32;
            font-weight: bold;
        }

        .comparison-table .badge-no {
            color: #c62828;
        }

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

        .token-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }

        .token-card {
            background-color: var(--white);
            border-radius: 10px;
            padding: 24px;
            text-align: center;
            border: 1px solid var(--gray-200);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .token-card:hover {
            border-color: var(--primary);
            transform: translateY(-3px);
        }

        .token-name {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 12px;
        }

        .token-price {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 4px;
        }

        .token-unit {
            font-size: 0.8rem;
            color: var(--body);
            margin-bottom: 12px;
        }

        .token-tag {
            display: inline-block;
            font-size: 0.75rem;
            background-color: var(--primary-light);
            color: var(--primary);
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 600;
        }

        /* 职业技术培训 & 人工智能培训 */
        .training-section {
            background-color: var(--white);
        }

        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }

        .training-card {
            background-color: var(--light);
            border: 1px solid var(--gray-200);
            border-radius: 10px;
            padding: 24px;
            transition: var(--transition);
        }

        .training-card:hover {
            background-color: var(--white);
            border-color: var(--primary-glow);
            box-shadow: var(--shadow);
        }

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

        .training-card p {
            font-size: 0.85rem;
            color: var(--body);
        }

        /* 客户案例中心 (包含真实图片素材) */
        .cases-section {
            background-color: var(--light);
        }

        .cases-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .case-card {
            background-color: var(--white);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--gray-100);
            transition: var(--transition);
        }

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

        .case-img-wrapper {
            position: relative;
            width: 100%;
            height: 220px;
            overflow: hidden;
            background-color: var(--gray-100);
        }

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

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

        .case-info {
            padding: 24px;
        }

        .case-tag {
            font-size: 0.75rem;
            background-color: var(--primary-light);
            color: var(--primary);
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 600;
            display: inline-block;
            margin-bottom: 12px;
        }

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

        .case-desc {
            font-size: 0.9rem;
            color: var(--body);
        }

        /* 客户评论卡片 */
        .reviews-section {
            background-color: var(--white);
        }

        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }

        .review-user-card {
            background-color: var(--light);
            border: 1px solid var(--gray-200);
            border-radius: 12px;
            padding: 30px;
            position: relative;
        }

        .review-quote {
            font-size: 0.95rem;
            color: var(--body);
            margin-bottom: 20px;
            font-style: italic;
        }

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

        .avatar-placeholder {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-glow) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-weight: bold;
            font-size: 1.1rem;
        }

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

        .reviewer-info p {
            font-size: 0.8rem;
            color: var(--body);
        }

        /* FAQ折叠面板 & AI术语百科 & 自助排查 */
        .faq-section {
            background-color: var(--light);
        }

        .faq-tabs {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin-bottom: 30px;
        }

        .faq-tab-btn {
            background: var(--white);
            border: 1px solid var(--gray-200);
            padding: 8px 18px;
            border-radius: 4px;
            cursor: pointer;
            font-weight: 500;
            color: var(--body);
            transition: var(--transition);
        }

        .faq-tab-btn.active {
            background: var(--primary);
            color: var(--white);
            border-color: var(--primary);
        }

        .faq-container {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background-color: var(--white);
            border: 1px solid var(--gray-200);
            border-radius: 8px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-header {
            padding: 18px 24px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            color: var(--dark);
        }

        .faq-icon {
            transition: var(--transition);
            font-weight: bold;
        }

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

        .faq-content {
            padding: 20px 24px;
            font-size: 0.95rem;
            color: var(--body);
            border-top: 1px solid var(--gray-100);
        }

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

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

        /* 术语百科和排查区样式 */
        .help-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            max-width: 900px;
            margin: 40px auto 0 auto;
        }

        .help-card {
            background-color: var(--white);
            border: 1px solid var(--gray-200);
            border-radius: 12px;
            padding: 24px;
        }

        .help-card h4 {
            font-size: 1.2rem;
            margin-bottom: 12px;
            color: var(--primary);
        }

        .help-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .help-list li {
            font-size: 0.9rem;
            border-bottom: 1px dashed var(--gray-100);
            padding-bottom: 6px;
        }

        .help-list li strong {
            color: var(--dark);
        }

        /* 知识库/行业资讯文章列表 */
        .news-section {
            background-color: var(--white);
        }

        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 24px;
        }

        .news-card {
            background-color: var(--light);
            border-radius: 10px;
            border: 1px solid var(--gray-200);
            padding: 24px;
            transition: var(--transition);
        }

        .news-card:hover {
            background-color: var(--white);
            border-color: var(--primary);
            box-shadow: var(--shadow);
        }

        .news-date {
            font-size: 0.8rem;
            color: var(--body);
            margin-bottom: 8px;
        }

        .news-title {
            font-size: 1.15rem;
            margin-bottom: 12px;
            line-height: 1.4;
        }

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

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

        .news-excerpt {
            font-size: 0.9rem;
            color: var(--body);
            margin-bottom: 16px;
        }

        /* 联系我们 & 需求表单 & 加盟代理 */
        .contact-section {
            background-color: var(--light);
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 50px;
            align-items: flex-start;
        }

        .form-card {
            background-color: var(--white);
            padding: 40px;
            border-radius: 16px;
            border: 1px solid var(--gray-200);
            box-shadow: var(--shadow);
        }

        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 20px;
        }

        .form-group {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .form-group.full-width {
            grid-column: span 2;
        }

        .form-label {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--dark);
        }

        .form-input, .form-select, .form-textarea {
            padding: 10px 14px;
            border: 1px solid var(--gray-200);
            border-radius: 6px;
            background-color: var(--light);
            font-family: inherit;
            font-size: 0.95rem;
            color: var(--dark);
            transition: var(--transition);
        }

        .form-input:focus, .form-select:focus, .form-textarea:focus {
            outline: none;
            border-color: var(--primary);
            background-color: var(--white);
            box-shadow: 0 0 0 3px rgba(138, 43, 226, 0.1);
        }

        .contact-info-panel {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }

        .contact-info-card {
            background-color: var(--white);
            padding: 24px;
            border-radius: 10px;
            border: 1px solid var(--gray-200);
        }

        .contact-info-card h4 {
            font-size: 1.1rem;
            margin-bottom: 12px;
            color: var(--primary);
        }

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

        .contact-method-list li {
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .qrcode-box {
            text-align: center;
            margin-top: 10px;
        }

        .qrcode-box img {
            max-width: 130px;
            border: 1px solid var(--gray-200);
            border-radius: 6px;
            padding: 4px;
        }

        /* 友情链接与页脚 */
        .footer {
            background-color: #110622;
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 30px 0;
            font-size: 0.9rem;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

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

        .footer-about h4, .footer-links-title {
            color: var(--white);
            font-size: 1.1rem;
            margin-bottom: 16px;
            font-weight: 700;
        }

        .footer-nav {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-nav a {
            color: rgba(255, 255, 255, 0.7);
        }

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

        .footer-friends {
            background-color: rgba(255, 255, 255, 0.03);
            border-radius: 8px;
            padding: 16px;
        }

        .footer-friends a {
            display: inline-block;
            margin-right: 12px;
            margin-bottom: 8px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 4px 10px;
            border-radius: 4px;
        }

        .footer-friends a:hover {
            color: var(--white);
            border-color: var(--primary-glow);
            background-color: rgba(138, 43, 226, 0.1);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
        }

        .footer-bottom p {
            font-size: 0.8rem;
        }

        /* 侧边悬浮客服 */
        .sticky-contact {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .sticky-btn {
            width: 50px;
            height: 50px;
            background-color: var(--primary);
            color: var(--white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 15px rgba(138, 43, 226, 0.3);
            cursor: pointer;
            transition: var(--transition);
            position: relative;
        }

        .sticky-btn:hover {
            transform: scale(1.1);
            background-color: var(--accent);
        }

        .sticky-qr-pop {
            position: absolute;
            bottom: 60px;
            right: 0;
            background-color: var(--white);
            border: 1px solid var(--gray-200);
            border-radius: 8px;
            padding: 12px;
            box-shadow: var(--shadow-hover);
            display: none;
            text-align: center;
            width: 140px;
        }

        .sticky-qr-pop img {
            width: 100%;
            height: auto;
            margin-bottom: 4px;
        }

        .sticky-qr-pop span {
            font-size: 0.75rem;
            color: var(--dark);
            font-weight: bold;
        }

        .sticky-btn:hover .sticky-qr-pop {
            display: block;
        }

        /* 移动端响应式优化 */
        @media (max-width: 992px) {
            .header-inner {
                padding: 0 16px;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background-color: var(--white);
                border-bottom: 1px solid var(--gray-200);
                padding: 20px;
                box-shadow: var(--shadow);
            }
            .nav-menu.active {
                display: flex;
            }
            .menu-toggle {
                display: block;
            }
            .about-grid, .tab-panel, .contact-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.2rem;
            }
            .hero-desc {
                font-size: 1rem;
            }
            .timeline::before {
                left: 20px;
            }
            .timeline-item {
                width: 100%;
                padding-left: 45px;
                padding-right: 0;
                text-align: left !important;
            }
            .timeline-badge {
                left: 12px !important;
            }
            .timeline-item:nth-child(even) {
                left: 0;
            }
            .form-grid {
                grid-template-columns: 1fr;
            }
            .form-group.full-width {
                grid-column: span 1;
            }
            .help-grid {
                grid-template-columns: 1fr;
            }
        }