/* 变量及重置 */
        :root {
            --bg-color: #09070f;
            --card-bg: #120e24;
            --card-border: #251b47;
            --primary-neon: #ff007f;
            --secondary-neon: #9d4edd;
            --accent-cyan: #00f0ff;
            --text-main: #e2e8f0;
            --text-muted: #94a3b8;
            --text-pure: #ffffff;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--bg-color);
            color: var(--text-main);
        }

        body {
            line-height: 1.6;
            overflow-x: hidden;
            background-image: radial-gradient(circle at 50% 0%, #1a103c 0%, var(--bg-color) 70%);
        }

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

        ul {
            list-style: none;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        /* 布局容器 */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
        }

        /* 顶部导航 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(9, 7, 15, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--card-border);
        }

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

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

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

        .logo-text {
            font-weight: 800;
            font-size: 1.25rem;
            background: linear-gradient(to right, var(--primary-neon), var(--accent-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            letter-spacing: 1px;
        }

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

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

        .nav-item:hover, .nav-item.active {
            color: var(--text-pure);
            text-shadow: 0 0 8px var(--primary-neon);
        }

        .nav-btn {
            background: linear-gradient(135deg, var(--primary-neon), var(--secondary-neon));
            color: var(--text-pure);
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 600;
            box-shadow: 0 0 15px rgba(255, 0, 127, 0.4);
        }

        .nav-btn:hover {
            box-shadow: 0 0 25px rgba(255, 0, 127, 0.8);
            transform: scale(1.05);
        }

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

        /* 首屏 Hero (无图，纯科技渐变与几何发光) */
        .hero-section {
            padding: 160px 0 100px;
            position: relative;
            text-align: center;
            overflow: hidden;
        }

        .hero-glow-1 {
            position: absolute;
            top: 20%;
            left: 10%;
            width: 300px;
            height: 300px;
            background: var(--primary-neon);
            filter: blur(150px);
            opacity: 0.15;
            pointer-events: none;
        }

        .hero-glow-2 {
            position: absolute;
            bottom: 10%;
            right: 10%;
            width: 350px;
            height: 350px;
            background: var(--accent-cyan);
            filter: blur(150px);
            opacity: 0.15;
            pointer-events: none;
        }

        .hero-tag {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(255, 0, 127, 0.1);
            border: 1px solid rgba(255, 0, 127, 0.3);
            border-radius: 20px;
            color: var(--primary-neon);
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 24px;
            letter-spacing: 1px;
            animation: pulse 2s infinite;
        }

        h1.hero-title {
            font-size: 2.8rem;
            line-height: 1.25;
            font-weight: 800;
            margin-bottom: 24px;
            background: linear-gradient(135deg, var(--text-pure) 30%, #f472b6, var(--accent-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            letter-spacing: -1px;
        }

        .hero-sub {
            font-size: 1.2rem;
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto 40px;
        }

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

        .btn-primary {
            background: linear-gradient(135deg, var(--primary-neon), var(--secondary-neon));
            color: var(--text-pure);
            padding: 14px 32px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 1rem;
            box-shadow: 0 0 20px rgba(255, 0, 127, 0.5);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-primary:hover {
            box-shadow: 0 0 30px rgba(255, 0, 127, 0.8);
            transform: translateY(-2px);
        }

        .btn-secondary {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--card-border);
            color: var(--text-pure);
            padding: 14px 32px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 1rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: var(--accent-cyan);
            transform: translateY(-2px);
        }

        /* 核心数据卡片 */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
            max-width: 1000px;
            margin: 0 auto;
        }

        .metric-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            padding: 24px;
            border-radius: 12px;
            text-align: center;
            transition: var(--transition);
        }

        .metric-card:hover {
            border-color: var(--primary-neon);
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(255, 0, 127, 0.1);
        }

        .metric-value {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-pure);
            background: linear-gradient(135deg, #fff, var(--accent-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 8px;
        }

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

        /* 公用分区样式 */
        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--card-border);
        }

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

        .section-tag {
            color: var(--primary-neon);
            font-size: 0.85rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 10px;
            display: block;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-pure);
            margin-bottom: 15px;
        }

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

        /* 平台介绍 */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .intro-content h3 {
            font-size: 1.6rem;
            color: var(--text-pure);
            margin-bottom: 20px;
        }

        .intro-content p {
            color: var(--text-muted);
            margin-bottom: 20px;
            font-size: 1rem;
        }

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

        .intro-feat-item {
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid var(--card-border);
            padding: 15px;
            border-radius: 8px;
        }

        .intro-feat-item h4 {
            color: var(--accent-cyan);
            margin-bottom: 8px;
            font-size: 0.95rem;
        }

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

        .intro-image-area {
            position: relative;
            background: linear-gradient(135deg, rgba(255, 0, 127, 0.1), rgba(0, 240, 255, 0.1));
            border-radius: 16px;
            border: 1px solid var(--card-border);
            padding: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

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

        .service-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            padding: 30px;
            border-radius: 12px;
            transition: var(--transition);
            position: relative;
        }

        .service-card:hover {
            border-color: var(--primary-neon);
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(255, 0, 127, 0.15);
        }

        .service-icon {
            font-size: 2rem;
            margin-bottom: 20px;
            display: inline-block;
        }

        .service-card h3 {
            font-size: 1.3rem;
            color: var(--text-pure);
            margin-bottom: 12px;
        }

        .service-card p {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 20px;
        }

        .service-link {
            color: var(--accent-cyan);
            font-size: 0.85rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        /* 标签云 - 支持平台 */
        .platform-tagcloud {
            margin-top: 40px;
            background: rgba(255, 255, 255, 0.01);
            border: 1px solid var(--card-border);
            padding: 30px;
            border-radius: 12px;
            text-align: center;
        }

        .platform-tagcloud h4 {
            color: var(--text-pure);
            margin-bottom: 20px;
            font-size: 1.1rem;
        }

        .tag-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }

        .plat-tag {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--card-border);
            padding: 6px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            color: var(--text-main);
            transition: var(--transition);
        }

        .plat-tag:hover {
            background: var(--primary-neon);
            color: var(--text-pure);
            border-color: var(--primary-neon);
            box-shadow: 0 0 10px rgba(255, 0, 127, 0.5);
        }

        /* 标准化流程 & 全国服务网络 */
        .flow-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }

        .flow-step {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            padding: 24px;
            border-radius: 12px;
            position: relative;
        }

        .flow-step::before {
            content: attr(data-step);
            position: absolute;
            top: 20px;
            right: 20px;
            font-size: 2rem;
            font-weight: 800;
            color: rgba(255, 255, 255, 0.05);
        }

        .flow-step h3 {
            font-size: 1.1rem;
            color: var(--text-pure);
            margin-bottom: 10px;
        }

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

        /* 对比评测板块 */
        .eval-section {
            background: linear-gradient(180deg, var(--bg-color) 0%, rgba(18, 14, 36, 0.8) 100%);
        }

        .eval-summary {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 40px;
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid var(--card-border);
            padding: 30px;
            border-radius: 16px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }

        .eval-score-box {
            text-align: center;
        }

        .eval-stars {
            color: #f59e0b;
            font-size: 1.8rem;
            margin-bottom: 5px;
        }

        .eval-score {
            font-size: 3rem;
            font-weight: 800;
            color: var(--text-pure);
            line-height: 1;
        }

        .eval-score span {
            font-size: 1.2rem;
            color: var(--text-muted);
        }

        .eval-label {
            font-size: 0.9rem;
            color: var(--accent-cyan);
            font-weight: 600;
            margin-top: 5px;
        }

        .eval-desc {
            max-width: 500px;
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* 响应式表格 */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border: 1px solid var(--card-border);
            border-radius: 12px;
            background: var(--card-bg);
        }

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

        table.comparison-table th, table.comparison-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--card-border);
            font-size: 0.9rem;
        }

        table.comparison-table th {
            background: rgba(255, 255, 255, 0.02);
            color: var(--text-pure);
            font-weight: 600;
        }

        table.comparison-table td {
            color: var(--text-muted);
        }

        table.comparison-table tr:hover td {
            color: var(--text-pure);
            background: rgba(255, 255, 255, 0.01);
        }

        table.comparison-table td.highlight {
            color: var(--primary-neon);
            font-weight: 600;
        }

        /* Token 比价 */
        .token-comparison {
            margin-top: 40px;
        }

        /* 职业技术与人工智能培训 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .training-card {
            background: linear-gradient(135deg, rgba(157, 78, 221, 0.1), rgba(9, 7, 15, 1));
            border: 1px solid rgba(157, 78, 221, 0.3);
            padding: 24px;
            border-radius: 12px;
            transition: var(--transition);
        }

        .training-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.2);
            transform: translateY(-3px);
        }

        .training-badge {
            display: inline-block;
            padding: 4px 10px;
            background: rgba(0, 240, 255, 0.1);
            color: var(--accent-cyan);
            font-size: 0.75rem;
            border-radius: 4px;
            margin-bottom: 15px;
            font-weight: 600;
        }

        .training-card h3 {
            font-size: 1.15rem;
            color: var(--text-pure);
            margin-bottom: 10px;
        }

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

        .training-meta {
            font-size: 0.8rem;
            color: var(--primary-neon);
            font-weight: 600;
        }

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

        .case-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: 12px;
            overflow: hidden;
            transition: var(--transition);
        }

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

        .case-img-container {
            width: 100%;
            height: 200px;
            overflow: hidden;
            background: #1a153b;
            position: relative;
        }

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

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

        .case-info {
            padding: 20px;
        }

        .case-tag {
            color: var(--accent-cyan);
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 8px;
            display: inline-block;
        }

        .case-info h3 {
            color: var(--text-pure);
            font-size: 1.1rem;
            margin-bottom: 10px;
        }

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

        /* 需求匹配表单 */
        .demand-section {
            position: relative;
        }

        .form-wrapper {
            max-width: 650px;
            margin: 0 auto;
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            padding: 40px;
            border-radius: 16px;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
        }

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

        .form-label {
            display: block;
            margin-bottom: 8px;
            font-size: 0.9rem;
            color: var(--text-main);
            font-weight: 500;
        }

        .form-control {
            width: 100%;
            background: rgba(9, 7, 15, 0.6);
            border: 1px solid var(--card-border);
            border-radius: 6px;
            padding: 12px 16px;
            color: var(--text-pure);
            font-size: 0.95rem;
            transition: var(--transition);
        }

        .form-control:focus {
            border-color: var(--primary-neon);
            outline: none;
            box-shadow: 0 0 10px rgba(255, 0, 127, 0.2);
        }

        select.form-control {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%2394a3b8'%3E%3Cpath d='M7 10l5 5 5-5H7z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 12px center;
            background-size: 16px;
        }

        .btn-submit {
            width: 100%;
            background: linear-gradient(135deg, var(--primary-neon), var(--secondary-neon));
            color: var(--text-pure);
            border: none;
            padding: 14px;
            border-radius: 6px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            box-shadow: 0 0 15px rgba(255, 0, 127, 0.4);
            transition: var(--transition);
        }

        .btn-submit:hover {
            box-shadow: 0 0 25px rgba(255, 0, 127, 0.7);
            transform: translateY(-1px);
        }

        /* 客户评论卡片 */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
        }

        .comment-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            padding: 24px;
            border-radius: 12px;
            position: relative;
        }

        .comment-text {
            font-style: italic;
            font-size: 0.9rem;
            color: var(--text-main);
            margin-bottom: 20px;
        }

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

        .author-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary-neon), var(--accent-cyan));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            color: var(--text-pure);
            font-size: 0.9rem;
        }

        .author-info h4 {
            font-size: 0.9rem;
            color: var(--text-pure);
        }

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

        /* FAQ 折叠面板 & 帮助中心 */
        .help-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr;
            gap: 40px;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: 8px;
            overflow: hidden;
        }

        .faq-question {
            padding: 18px 24px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-pure);
            transition: var(--transition);
        }

        .faq-question:hover {
            background: rgba(255, 255, 255, 0.01);
        }

        .faq-icon {
            transition: var(--transition);
            color: var(--accent-cyan);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
            background: rgba(9, 7, 15, 0.4);
            border-top: 0 solid var(--card-border);
        }

        .faq-answer p {
            padding: 18px 24px;
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .faq-item.active .faq-answer {
            max-height: 1000px;
            transition: max-height 0.3s cubic-bezier(1, 0, 1, 0);
            border-top-width: 1px;
        }

        .faq-item.active .faq-icon {
            transform: rotate(180deg);
        }

        /* 自助排查与术语百科 */
        .help-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .sidebar-widget {
            background: rgba(255, 255, 255, 0.01);
            border: 1px solid var(--card-border);
            padding: 24px;
            border-radius: 12px;
        }

        .sidebar-widget h3 {
            color: var(--text-pure);
            font-size: 1.1rem;
            margin-bottom: 15px;
            border-left: 3px solid var(--primary-neon);
            padding-left: 10px;
        }

        .trouble-list li {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 10px;
            padding-left: 15px;
            position: relative;
        }

        .trouble-list li::before {
            content: "•";
            color: var(--accent-cyan);
            position: absolute;
            left: 0;
        }

        .wiki-terms {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .wiki-term {
            font-size: 0.75rem;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--card-border);
            color: var(--text-main);
            padding: 4px 10px;
            border-radius: 4px;
        }

        /* 知识库 / 新闻文章列表 */
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin-bottom: 24px;
        }

        .article-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            padding: 20px;
            border-radius: 8px;
            transition: var(--transition);
        }

        .article-card:hover {
            border-color: var(--accent-cyan);
            transform: translateY(-2px);
        }

        .article-card h4 {
            font-size: 0.95rem;
            color: var(--text-pure);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .article-link {
            font-size: 0.8rem;
            color: var(--primary-neon);
            font-weight: 600;
        }

        /* 联系我们 & 加盟代理 */
        .contact-box {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .contact-info {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

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

        .contact-icon {
            font-size: 1.5rem;
            color: var(--accent-cyan);
        }

        .contact-text h4 {
            color: var(--text-pure);
            font-size: 0.95rem;
            margin-bottom: 5px;
        }

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

        .qr-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            padding: 30px;
            border-radius: 16px;
            text-align: center;
            max-width: 320px;
            margin: 0 auto;
        }

        .qr-img {
            margin: 0 auto 15px;
            width: 180px;
            height: 180px;
            background: #fff;
            padding: 10px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .qr-img img {
            max-width: 100%;
            height: auto;
        }

        .qr-card p {
            font-size: 0.85rem;
            color: var(--text-main);
            font-weight: 600;
        }

        /* 友情链接与页脚 */
        footer {
            background: #06040a;
            border-top: 1px solid var(--card-border);
            padding: 60px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr repeat(3, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand h3 {
            font-size: 1.3rem;
            margin-bottom: 15px;
            color: var(--text-pure);
        }

        .footer-brand p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 10px;
        }

        .footer-links h4 {
            font-size: 0.95rem;
            color: var(--text-pure);
            margin-bottom: 15px;
            position: relative;
        }

        .footer-links ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .footer-links a:hover {
            color: var(--accent-cyan);
            padding-left: 5px;
        }

        /* 友情链接专区 */
        .friendly-links {
            border-top: 1px solid var(--card-border);
            padding-top: 30px;
            margin-top: 30px;
        }

        .friendly-links h4 {
            font-size: 0.9rem;
            color: var(--text-pure);
            margin-bottom: 15px;
        }

        .friendly-links-container {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
        }

        .friendly-links-container a {
            font-size: 0.8rem;
            color: var(--text-muted);
            background: rgba(255, 255, 255, 0.02);
            padding: 4px 10px;
            border: 1px solid var(--card-border);
            border-radius: 4px;
        }

        .friendly-links-container a:hover {
            color: var(--accent-cyan);
            border-color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.05);
        }

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

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

        /* 侧边悬浮工具 */
        .sidebar-tools {
            position: fixed;
            bottom: 40px;
            right: 20px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            z-index: 999;
        }

        .tool-btn {
            width: 48px;
            height: 48px;
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-pure);
            cursor: pointer;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
            transition: var(--transition);
            position: relative;
        }

        .tool-btn:hover {
            background: var(--primary-neon);
            border-color: var(--primary-neon);
            color: var(--text-pure);
            transform: translateY(-3px);
        }

        .tool-btn .tooltip {
            position: absolute;
            right: 60px;
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            color: var(--text-pure);
            padding: 6px 12px;
            border-radius: 4px;
            font-size: 0.75rem;
            white-space: nowrap;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
        }

        .tool-btn:hover .tooltip {
            opacity: 1;
            visibility: visible;
            right: 55px;
        }

        /* 关键动画 */
        @keyframes pulse {
            0% { transform: scale(1); opacity: 0.9; }
            50% { transform: scale(1.03); opacity: 1; }
            100% { transform: scale(1); opacity: 0.9; }
        }

        /* 响应式适配 */
        @media (max-width: 992px) {
            h1.hero-title { font-size: 2.2rem; }
            .intro-grid { grid-template-columns: 1fr; }
            .help-grid { grid-template-columns: 1fr; }
            .contact-box { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }

        @media (max-width: 768px) {
            .menu-toggle { display: block; }
            .nav-menu {
                position: fixed;
                top: 70px;
                left: -100%;
                width: 100%;
                height: calc(100vh - 70px);
                background: var(--bg-color);
                flex-direction: column;
                padding: 40px 20px;
                transition: 0.4s ease;
                border-top: 1px solid var(--card-border);
            }
            .nav-menu.open { left: 0; }
            .hero-section { padding: 120px 0 60px; }
            h1.hero-title { font-size: 1.8rem; }
            .form-wrapper { padding: 24px; }
            .footer-grid { grid-template-columns: 1fr; }
        }