/* 暗夜赛博高饱和粉紫风样式 */
        :root {
            --bg-main: #0a0813;
            --bg-card: #120e25;
            --bg-card-hover: #191433;
            --primary: #ff007f;
            --primary-glow: rgba(255, 0, 127, 0.4);
            --secondary: #7f00ff;
            --secondary-glow: rgba(127, 0, 255, 0.4);
            --cyan: #00f0ff;
            --text-light: #ffffff;
            --text-muted: #a49fc6;
            --border-color: rgba(255, 0, 127, 0.15);
            --border-hover: rgba(0, 240, 255, 0.4);
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            --container-max-width: 1200px;
        }

        /* 基础复位 */
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            background-color: var(--bg-main);
            color: var(--text-light);
            font-family: var(--font-sans);
            line-height: 1.6;
            overflow-x: hidden;
            position: relative;
        }

        /* 隐藏滚动条样式 */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-main);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--secondary);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--primary);
        }

        /* 页面整体居中容器 */
        .container {
            width: 100%;
            max-width: var(--container-max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 导航栏 */
        header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(10, 8, 19, 0.9);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
        }

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

        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
        }

        .ai-page-logo {
            height: 40px;
            display: block;
        }

        .brand-text {
            font-size: 1.3rem;
            font-weight: 800;
            background: linear-gradient(45deg, var(--primary), var(--cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            letter-spacing: 1px;
        }

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

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

        .nav-menu a:hover,
        .nav-menu a.active {
            color: var(--cyan);
        }

        .nav-btn {
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            color: var(--text-light) !important;
            padding: 8px 18px;
            border-radius: 30px;
            font-weight: bold;
            box-shadow: 0 4px 15px var(--primary-glow);
            transition: transform 0.2s ease, box-shadow 0.2s ease;
        }

        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px var(--primary-glow);
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 6px;
            background: none;
            border: none;
            cursor: pointer;
        }

        .menu-toggle span {
            display: block;
            width: 25px;
            height: 3px;
            background-color: var(--text-light);
            transition: all 0.3s ease;
        }

        /* 首屏 Hero 区 - 绝对禁止出现图片 */
        .hero {
            position: relative;
            padding: 120px 0 100px 0;
            background: radial-gradient(circle at 80% 20%, rgba(127, 0, 255, 0.15) 0%, transparent 50%),
                        radial-gradient(circle at 10% 80%, rgba(255, 0, 127, 0.12) 0%, transparent 50%);
            border-bottom: 1px solid var(--border-color);
            overflow: hidden;
            text-align: center;
        }

        /* 赛博网格装饰背景，纯CSS */
        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: 
                linear-gradient(rgba(255, 0, 127, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 0, 127, 0.03) 1px, transparent 1px);
            background-size: 40px 40px;
            z-index: 1;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 850px;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(255, 0, 127, 0.1);
            border: 1px solid var(--primary);
            color: var(--primary);
            border-radius: 50px;
            font-size: 0.85rem;
            margin-bottom: 25px;
            font-weight: 600;
            letter-spacing: 1px;
            box-shadow: 0 0 10px rgba(255, 0, 127, 0.2);
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0% { box-shadow: 0 0 10px rgba(255, 0, 127, 0.2); }
            50% { box-shadow: 0 0 20px rgba(255, 0, 127, 0.4); }
            100% { box-shadow: 0 0 10px rgba(255, 0, 127, 0.2); }
        }

        /* 核心 H1 */
        .hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 25px;
            background: linear-gradient(135deg, #ffffff 30%, #ff79c6 70%, #00f0ff 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: 0 0 30px rgba(255, 0, 127, 0.2);
        }

        .hero-desc {
            font-size: 1.2rem;
            color: var(--text-muted);
            margin-bottom: 40px;
            line-height: 1.8;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        .btn-visit {
            display: inline-block;
            background: linear-gradient(90deg, #ff007f, #7f00ff);
            color: var(--text-light);
            text-decoration: none;
            padding: 16px 36px;
            font-size: 1.1rem;
            font-weight: bold;
            border-radius: 50px;
            box-shadow: 0 0 30px var(--primary-glow);
            transition: all 0.3s ease;
            position: relative;
            z-index: 10;
            border: 2px solid transparent;
        }

        .btn-visit:hover {
            transform: scale(1.05);
            box-shadow: 0 0 40px rgba(255, 0, 127, 0.6);
            border-color: var(--cyan);
        }

        .btn-secondary {
            display: inline-block;
            background: rgba(18, 14, 37, 0.8);
            color: var(--text-light);
            text-decoration: none;
            padding: 16px 36px;
            font-size: 1.1rem;
            font-weight: bold;
            border-radius: 50px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            transition: all 0.3s ease;
        }

        .btn-secondary:hover {
            background: rgba(25, 20, 51, 0.9);
            border-color: var(--cyan);
            color: var(--cyan);
        }

        /* 页面主要区域设置 */
        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
        }

        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 15px;
            background: linear-gradient(90deg, #ffffff, var(--cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .section-subtitle {
            color: var(--text-muted);
            font-size: 1rem;
            max-width: 600px;
            margin: 0 auto;
        }

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

        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 15px;
            padding: 30px 20px;
            text-align: center;
            transition: all 0.3s ease;
        }

        .stat-card:hover {
            transform: translateY(-5px);
            border-color: var(--border-hover);
            box-shadow: 0 10px 30px rgba(0, 240, 255, 0.1);
        }

        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--cyan);
            margin-bottom: 10px;
            font-family: monospace;
            text-shadow: 0 0 10px rgba(0, 240, 255, 0.3);
        }

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

        /* 关于我们与平台介绍 */
        .about-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.5rem;
            color: var(--primary);
            margin-bottom: 20px;
        }

        .about-text p {
            color: var(--text-muted);
            margin-bottom: 20px;
            line-height: 1.8;
        }

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

        .platform-feature-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            margin-bottom: 15px;
        }

        .platform-feature-item::before {
            content: '✓';
            color: var(--cyan);
            font-weight: bold;
            font-size: 1.2rem;
        }

        .about-visual {
            background: linear-gradient(135deg, var(--bg-card) 0%, rgba(127, 0, 255, 0.2) 100%);
            border: 1px solid var(--border-color);
            border-radius: 20px;
            padding: 40px;
            position: relative;
        }

        /* 服务与场景卡片 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

        .service-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 15px;
            padding: 30px;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .service-card:hover {
            transform: translateY(-8px);
            border-color: var(--primary);
            box-shadow: 0 10px 30px rgba(255, 0, 127, 0.15);
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: linear-gradient(to bottom, var(--primary), var(--secondary));
        }

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

        .service-title {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-light);
        }

        .service-desc {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        /* 聚合的模型标签 */
        .model-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 15px;
        }

        .model-tag {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text-muted);
            padding: 3px 10px;
            border-radius: 4px;
            font-size: 0.75rem;
        }

        .model-tag.highlight {
            border-color: var(--cyan);
            color: var(--cyan);
        }

        /* 标准化流程与时间线 */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
        }

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

        .timeline-item {
            display: flex;
            justify-content: flex-end;
            padding-right: 50%;
            position: relative;
            margin-bottom: 40px;
        }

        .timeline-item:nth-child(even) {
            justify-content: flex-start;
            padding-right: 0;
            padding-left: 50%;
        }

        .timeline-badge {
            position: absolute;
            left: 50%;
            top: 0;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: var(--primary);
            border: 4px solid var(--bg-main);
            transform: translateX(-50%);
            box-shadow: 0 0 10px var(--primary);
            z-index: 10;
        }

        .timeline-content {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 20px;
            width: 90%;
            margin-right: 20px;
            position: relative;
        }

        .timeline-item:nth-child(even) .timeline-content {
            margin-right: 0;
            margin-left: 20px;
        }

        .timeline-step {
            color: var(--cyan);
            font-weight: 700;
            font-size: 0.85rem;
            text-transform: uppercase;
            margin-bottom: 5px;
        }

        .timeline-title {
            font-size: 1.1rem;
            font-weight: bold;
            margin-bottom: 8px;
        }

        /* 案例展示区 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .case-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 15px;
            overflow: hidden;
            transition: all 0.3s ease;
        }

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

        .case-img-wrapper {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/9;
            background: #1a1635;
        }

        .ai-page-image {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .case-card:hover .ai-page-image {
            transform: scale(1.08);
        }

        .case-info {
            padding: 20px;
        }

        .case-tag {
            background: rgba(0, 240, 255, 0.1);
            color: var(--cyan);
            padding: 3px 10px;
            border-radius: 4px;
            font-size: 0.75rem;
            display: inline-block;
            margin-bottom: 10px;
        }

        .case-title {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

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

        /* 对比评测表格 */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            background: var(--bg-card);
        }

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

        th, td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-color);
        }

        th {
            background-color: rgba(25, 20, 51, 0.8);
            color: var(--text-light);
            font-weight: bold;
        }

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

        .highlight-col {
            background: rgba(255, 0, 127, 0.05);
            border-left: 1px solid rgba(255, 0, 127, 0.2);
            border-right: 1px solid rgba(255, 0, 127, 0.2);
        }

        .badge-star {
            color: #ffd700;
            font-weight: bold;
        }

        /* Token 比价 */
        .token-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }

        .token-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .token-info h4 {
            font-size: 1.1rem;
            color: var(--text-light);
            margin-bottom: 5px;
        }

        .token-info p {
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        .token-price {
            text-align: right;
        }

        .token-cost {
            font-size: 1.25rem;
            font-weight: bold;
            color: var(--cyan);
        }

        /* 培训板块 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
        }

        .training-card {
            background: linear-gradient(135deg, var(--bg-card) 0%, rgba(127, 0, 255, 0.1) 100%);
            border: 1px solid var(--border-color);
            border-radius: 15px;
            padding: 30px;
            transition: all 0.3s ease;
        }

        .training-card:hover {
            border-color: var(--cyan);
            box-shadow: 0 5px 25px rgba(0, 240, 255, 0.1);
        }

        .cert-org {
            font-size: 0.8rem;
            color: var(--primary);
            text-transform: uppercase;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .cert-name {
            font-size: 1.25rem;
            font-weight: bold;
            margin-bottom: 15px;
        }

        .training-details {
            list-style: none;
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        .training-details li {
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .training-details li::before {
            content: '▫';
            color: var(--primary);
        }

        /* 常见用户问题 FAQ (手风琴) */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

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

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

        .faq-question {
            padding: 20px;
            width: 100%;
            background: none;
            border: none;
            color: var(--text-light);
            text-align: left;
            font-size: 1.05rem;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

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

        .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 20px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        .faq-item.active .faq-answer {
            padding-bottom: 20px;
        }

        /* 客户评论卡片 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 25px;
        }

        .review-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 15px;
            padding: 30px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .review-text {
            color: var(--text-light);
            font-style: italic;
            margin-bottom: 20px;
            font-size: 0.95rem;
            line-height: 1.7;
        }

        .review-author {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .author-avatar {
            width: 45px;
            height: 45px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            color: var(--text-light);
        }

        .author-info h5 {
            font-size: 0.95rem;
            font-weight: bold;
        }

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

        /* 知识库/资讯 */
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
        }

        .article-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
            transition: all 0.3s ease;
        }

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

        .article-meta {
            font-size: 0.8rem;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .article-title {
            font-size: 1.1rem;
            font-weight: bold;
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .article-title a {
            color: var(--text-light);
            text-decoration: none;
            transition: color 0.2s ease;
        }

        .article-title a:hover {
            color: var(--cyan);
        }

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

        .article-link {
            color: var(--cyan);
            text-decoration: none;
            font-size: 0.85rem;
            font-weight: bold;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        /* 表单与联系我们 */
        .contact-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
        }

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

        .contact-method {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .contact-icon {
            width: 40px;
            height: 40px;
            border-radius: 8px;
            background: rgba(0, 240, 255, 0.1);
            color: var(--cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
        }

        .contact-text h4 {
            font-size: 1rem;
            margin-bottom: 3px;
        }

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

        /* 客服与社交媒体区 */
        .social-channels {
            display: flex;
            gap: 20px;
            margin-top: 15px;
            flex-wrap: wrap;
        }

        .social-card {
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 15px;
            text-align: center;
            flex: 1;
            min-width: 140px;
        }

        .social-card img {
            max-width: 100px;
            height: auto;
            border-radius: 4px;
            margin-bottom: 10px;
        }

        .social-card p {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* 表单样式 */
        .form-container {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 20px;
            padding: 40px;
        }

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

        .form-label {
            display: block;
            margin-bottom: 8px;
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        .form-control {
            width: 100%;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 12px 15px;
            color: var(--text-light);
            font-family: inherit;
            font-size: 0.95rem;
            transition: all 0.3s ease;
        }

        .form-control:focus {
            outline: none;
            border-color: var(--cyan);
            box-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
        }

        select.form-control {
            color: var(--text-muted);
        }

        select.form-control option {
            background: var(--bg-card);
            color: var(--text-light);
        }

        .btn-submit {
            width: 100%;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            color: var(--text-light);
            border: none;
            padding: 14px;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: bold;
            cursor: pointer;
            box-shadow: 0 4px 15px var(--primary-glow);
            transition: all 0.3s ease;
        }

        .btn-submit:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px var(--primary-glow);
        }

        /* 标签云组件 */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
        }

        .cloud-tag {
            background: rgba(25, 20, 51, 0.8);
            border: 1px solid var(--border-color);
            color: var(--text-light);
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 0.9rem;
            transition: all 0.2s ease;
            cursor: default;
        }

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

        /* 浮动客服入口 */
        .floating-contact {
            position: fixed;
            right: 25px;
            bottom: 25px;
            z-index: 99;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .float-btn {
            width: 55px;
            height: 55px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border: 2px solid var(--cyan);
            color: var(--text-light);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
            transition: all 0.3s ease;
            text-decoration: none;
            position: relative;
        }

        .float-btn:hover {
            transform: translateY(-3px) scale(1.05);
            box-shadow: 0 6px 20px var(--primary-glow);
        }

        .float-popover {
            position: absolute;
            bottom: 70px;
            right: 0;
            width: 220px;
            background: var(--bg-card);
            border: 1px solid var(--cyan);
            border-radius: 12px;
            padding: 15px;
            text-align: center;
            box-shadow: 0 10px 30px rgba(0,0,0,0.8);
            display: none;
        }

        .float-popover.active {
            display: block;
        }

        .float-popover img {
            max-width: 150px;
            height: auto;
            border-radius: 4px;
            margin-bottom: 8px;
        }

        .float-popover p {
            font-size: 0.85rem;
            color: var(--text-light);
        }

        /* 友情链接区 */
        .friendly-links {
            border-top: 1px solid var(--border-color);
            padding-top: 30px;
            margin-top: 40px;
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            align-items: center;
        }

        .friendly-links span {
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        .friendly-links a {
            color: var(--text-muted);
            text-decoration: none;
            font-size: 0.85rem;
            transition: color 0.2s ease;
        }

        .friendly-links a:hover {
            color: var(--cyan);
        }

        /* 页脚 */
        footer {
            background-color: #06050b;
            padding: 60px 0 30px 0;
            border-top: 1px solid var(--border-color);
        }

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

        .footer-brand h4 {
            font-size: 1.3rem;
            font-weight: 800;
            background: linear-gradient(45deg, var(--primary), var(--cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 15px;
        }

        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
        }

        .footer-links h5 {
            font-size: 1rem;
            font-weight: bold;
            margin-bottom: 20px;
            color: var(--text-light);
            position: relative;
        }

        .footer-links h5::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -6px;
            width: 30px;
            height: 2px;
            background: var(--cyan);
        }

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

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

        .footer-links ul li a {
            color: var(--text-muted);
            text-decoration: none;
            font-size: 0.9rem;
            transition: color 0.2s ease;
        }

        .footer-links ul li a:hover {
            color: var(--cyan);
        }

        .footer-copyright {
            text-align: center;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 25px;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        /* 响应式媒体查询 */
        @media (max-width: 992px) {
            .about-layout, .contact-layout {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }

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

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: var(--bg-main);
                border-bottom: 1px solid var(--border-color);
                padding: 20px 0;
                gap: 15px;
            }

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

            .menu-toggle {
                display: flex;
            }

            .hero-title {
                font-size: 1.8rem;
            }

            .hero-desc {
                font-size: 1rem;
            }

            .timeline::before {
                left: 20px;
            }

            .timeline-item {
                padding-right: 0;
                padding-left: 40px;
                justify-content: flex-start;
            }

            .timeline-item:nth-child(even) {
                padding-left: 40px;
            }

            .timeline-badge {
                left: 20px;
            }

            .timeline-content {
                width: 100%;
                margin-left: 0 !important;
            }

            .footer-grid {
                grid-template-columns: 1fr;
            }
        }