:root {
            --primary-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #ec4899 100%);
            --secondary-gradient: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
            --accent-color: #ec4899;
            --text-dark: #0f172a;
            --text-muted: #475569;
            --bg-light: #f8fafc;
            --bg-white: #ffffff;
            --border-color: #e2e8f0;
            --container-max: 1200px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(99, 102, 241, 0.15);
        }

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

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

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

        ul {
            list-style: none;
        }

        /* 统一容器 */
        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 导航栏 */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            transition: background 0.3s;
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

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

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

        .brand-name {
            font-size: 1.25rem;
            font-weight: 800;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .nav-menu {
            display: flex;
            gap: 24px;
        }

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

        .nav-item:hover {
            color: #6366f1;
        }

        .nav-btn {
            background: var(--primary-gradient);
            color: white;
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            border: none;
            cursor: pointer;
            box-shadow: var(--shadow-sm);
        }

        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            border: none;
            background: transparent;
        }

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

        /* Hero首屏 - 严禁出现图片 */
        .hero {
            padding: 120px 0 90px;
            background: radial-gradient(circle at 80% 20%, rgba(168, 85, 247, 0.15) 0%, rgba(99, 102, 241, 0.05) 50%, rgba(255, 255, 255, 0) 100%), var(--bg-white);
            text-align: center;
            border-bottom: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(rgba(99,102,241,0.03) 10%, transparent 20%);
            background-size: 40px 40px;
            pointer-events: none;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(99, 102, 241, 0.1);
            color: #6366f1;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 24px;
            letter-spacing: 1px;
        }

        /* 改写H1，控制在20字内 */
        .hero-title {
            font-size: 3rem;
            line-height: 1.25;
            font-weight: 800;
            margin-bottom: 24px;
            color: var(--text-dark);
        }

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

        .hero-subtitle {
            font-size: 1.25rem;
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto 40px;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn-main {
            background: var(--primary-gradient);
            color: white !important;
            font-weight: 600;
            padding: 16px 36px;
            border-radius: 50px;
            box-shadow: var(--shadow-lg);
        }

        .btn-secondary {
            background: var(--bg-white);
            color: var(--text-dark);
            font-weight: 600;
            padding: 16px 36px;
            border-radius: 50px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

        .btn-main:hover, .btn-secondary:hover {
            transform: translateY(-3px);
        }

        /* 数据指标 */
        .stats-section {
            padding: 60px 0;
            background: var(--bg-white);
            position: relative;
            z-index: 10;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 30px;
            margin-top: -100px;
            background: var(--bg-white);
            padding: 40px;
            border-radius: 20px;
            box-shadow: var(--shadow-md);
            border: 1px solid rgba(226, 232, 240, 0.8);
        }

        .stat-card {
            text-align: center;
            border-right: 1px solid var(--border-color);
        }

        .stat-card:last-child {
            border-right: none;
        }

        .stat-val {
            font-size: 2.5rem;
            font-weight: 800;
            background: var(--secondary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 0.95rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* 关于我们与平台介绍 */
        .section-padding {
            padding: 100px 0;
        }

        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 60px;
        }

        .section-header h2 {
            font-size: 2.25rem;
            font-weight: 800;
            margin-bottom: 16px;
            position: relative;
            display: inline-block;
        }

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

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

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

        .about-content h3 {
            font-size: 1.75rem;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--text-dark);
        }

        .about-content p {
            color: var(--text-muted);
            margin-bottom: 24px;
            font-size: 1rem;
        }

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

        .about-feat-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 600;
            color: var(--text-dark);
        }

        .about-feat-item i {
            color: #a855f7;
            font-size: 1.25rem;
        }

        /* 平台介绍指标网格 */
        .platform-intro-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
            margin-top: 40px;
        }

        .intro-card {
            background: var(--bg-white);
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            transition: all 0.3s;
            box-shadow: var(--shadow-sm);
        }

        .intro-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
            border-color: #6366f1;
        }

        .intro-icon {
            width: 50px;
            height: 50px;
            border-radius: 12px;
            background: rgba(99, 102, 241, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: #6366f1;
            font-size: 1.5rem;
            font-weight: bold;
        }

        .intro-card h4 {
            font-size: 1.2rem;
            margin-bottom: 12px;
            font-weight: 700;
        }

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

        /* 全平台AIGC服务 - 模型列表 */
        .models-section {
            background: var(--bg-white);
        }

        .models-container {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            max-width: 1000px;
            margin: 0 auto;
        }

        .model-tag {
            padding: 10px 20px;
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-muted);
            transition: all 0.2s;
        }

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

        /* 一站式AIGC制作场景 */
        .scenarios-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .scenario-card {
            background: var(--bg-white);
            border-radius: 16px;
            border: 1px solid var(--border-color);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s;
        }

        .scenario-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-md);
            border-color: #a855f7;
        }

        .scenario-content {
            padding: 30px;
        }

        .scenario-tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: 700;
            color: white;
            background: var(--secondary-gradient);
            margin-bottom: 16px;
        }

        .scenario-card h3 {
            font-size: 1.35rem;
            margin-bottom: 12px;
            font-weight: 700;
        }

        .scenario-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 20px;
        }

        .scenario-features {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
            font-size: 0.88rem;
            color: var(--text-dark);
            border-top: 1px solid var(--border-color);
            padding-top: 16px;
        }

        .scenario-features li {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .scenario-features li::before {
            content: "✓";
            color: #22c55e;
            font-weight: bold;
        }

        /* 解决方案与流程 */
        .solutions-section {
            background: var(--bg-white);
        }

        .solution-tabs {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }

        .tab-btn {
            padding: 12px 28px;
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
        }

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

        .solution-content-wrapper {
            background: var(--bg-light);
            border-radius: 20px;
            padding: 40px;
            border: 1px solid var(--border-color);
        }

        .solution-tab-pane {
            display: none;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .solution-tab-pane.active {
            display: grid;
        }

        .sol-text h3 {
            font-size: 1.75rem;
            margin-bottom: 16px;
        }

        .sol-text p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }

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

        .sol-item {
            background: var(--bg-white);
            padding: 15px 20px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            font-weight: 600;
        }

        /* 流程步骤 */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 30px;
            position: relative;
        }

        .process-card {
            background: var(--bg-white);
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            position: relative;
            text-align: center;
        }

        .process-num {
            position: absolute;
            top: -20px;
            left: 50%;
            transform: translateX(-50%);
            width: 40px;
            height: 40px;
            background: var(--primary-gradient);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            box-shadow: var(--shadow-sm);
        }

        .process-card h4 {
            font-size: 1.15rem;
            margin-top: 15px;
            margin-bottom: 10px;
            font-weight: 700;
        }

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

        /* 技术标准 & 服务网络 */
        .network-section {
            background: var(--bg-white);
        }

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

        .network-map-placeholder {
            background: linear-gradient(135deg, rgba(99,102,241,0.05) 0%, rgba(168,85,247,0.05) 100%);
            border: 2px dashed rgba(99, 102, 241, 0.2);
            border-radius: 20px;
            padding: 40px;
            text-align: center;
        }

        .network-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .network-city-card {
            background: var(--bg-light);
            padding: 20px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

        .network-city-card h5 {
            font-size: 1.1rem;
            margin-bottom: 8px;
            font-weight: 700;
        }

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

        /* 对比评测 - 突出优势 */
        .rating-box {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 30px;
            background: var(--bg-white);
            padding: 30px;
            border-radius: 16px;
            box-shadow: var(--shadow-sm);
            margin-bottom: 40px;
            border: 1px solid var(--border-color);
            flex-wrap: wrap;
        }

        .rating-score {
            font-size: 3rem;
            font-weight: 800;
            color: var(--accent-color);
        }

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

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

        .comparison-table-wrapper {
            width: 100%;
            overflow-x: auto;
            background: var(--bg-white);
            border-radius: 16px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }

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

        .comparison-table th, .comparison-table td {
            padding: 18px 24px;
            border-bottom: 1px solid var(--border-color);
        }

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

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

        .comparison-table .highlight {
            background: rgba(99, 102, 241, 0.03);
            font-weight: 600;
            color: #6366f1;
        }

        /* Token 比价 */
        .price-section {
            background: var(--bg-white);
        }

        .price-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
        }

        .price-card {
            background: var(--bg-light);
            border-radius: 16px;
            padding: 30px;
            border: 1px solid var(--border-color);
            text-align: center;
            transition: all 0.3s;
        }

        .price-card.featured {
            background: var(--bg-white);
            border-color: #a855f7;
            box-shadow: var(--shadow-md);
            position: relative;
            transform: scale(1.03);
        }

        .price-card.featured::before {
            content: "人气之选";
            position: absolute;
            top: 15px;
            right: 15px;
            background: var(--primary-gradient);
            color: white;
            font-size: 0.75rem;
            padding: 4px 10px;
            border-radius: 4px;
            font-weight: 700;
        }

        .price-card h4 {
            font-size: 1.25rem;
            margin-bottom: 15px;
        }

        .price-amount {
            font-size: 2.25rem;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 20px;
        }

        .price-amount span {
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-muted);
        }

        .price-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-bottom: 30px;
            text-align: left;
            font-size: 0.9rem;
        }

        .price-list li {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-muted);
        }

        /* 培训中心 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .training-card {
            background: var(--bg-white);
            border-radius: 16px;
            border: 1px solid var(--border-color);
            padding: 35px;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s;
        }

        .training-card:hover {
            border-color: #6366f1;
            box-shadow: var(--shadow-md);
        }

        .training-badge {
            display: inline-block;
            background: rgba(236, 72, 153, 0.1);
            color: var(--accent-color);
            padding: 4px 12px;
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .training-card h3 {
            font-size: 1.4rem;
            margin-bottom: 15px;
            font-weight: 700;
        }

        .training-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 24px;
        }

        /* 案例中心 */
        .case-section {
            background: var(--bg-white);
        }

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

        .case-card {
            background: var(--bg-light);
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--border-color);
        }

        .case-img-container {
            width: 100%;
            height: 220px;
            overflow: hidden;
            background: #e2e8f0;
        }

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

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

        .case-info {
            padding: 24px;
        }

        .case-info h4 {
            font-size: 1.2rem;
            margin-bottom: 10px;
            font-weight: 700;
        }

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

        /* 用户评论 */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }

        .comment-card {
            background: var(--bg-white);
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

        .comment-user {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 16px;
        }

        .user-avatar-text {
            width: 45px;
            height: 45px;
            border-radius: 50%;
            background: var(--primary-gradient);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
        }

        .user-meta h5 {
            font-size: 1rem;
            font-weight: 700;
        }

        .user-meta span {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .comment-text {
            font-size: 0.92rem;
            color: var(--text-muted);
            font-style: italic;
        }

        /* FAQ折叠面板 */
        .faq-section {
            background: var(--bg-white);
        }

        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            border: 1px solid var(--border-color);
            border-radius: 8px;
            background: var(--bg-light);
            overflow: hidden;
            transition: all 0.3s;
        }

        .faq-header {
            padding: 20px 24px;
            background: var(--bg-white);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 700;
            font-size: 1.05rem;
            user-select: none;
        }

        .faq-icon {
            font-size: 1.2rem;
            transition: transform 0.3s;
            color: #6366f1;
        }

        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        .faq-item.active {
            border-color: #6366f1;
        }

        .faq-item.active .faq-content {
            padding: 16px 24px 24px;
            max-height: 300px;
        }

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

        /* AI术语百科 & 自助排查 */
        .wiki-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .wiki-card {
            background: var(--bg-white);
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
        }

        .wiki-card h3 {
            font-size: 1.35rem;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .wiki-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .wiki-item dt {
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 4px;
        }

        .wiki-item dd {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* 资讯与知识库 */
        .news-section {
            background: var(--bg-white);
        }

        .news-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }

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

        .news-card:hover {
            border-color: #a855f7;
            transform: translateY(-3px);
        }

        .news-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 10px;
        }

        .news-card h4 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .news-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 16px;
        }

        .news-link {
            font-size: 0.9rem;
            font-weight: 600;
            color: #6366f1;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        /* 智能需求匹配与表单 */
        .form-section {
            background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(236, 72, 153, 0.05) 100%);
        }

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

        .form-info h3 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .form-info p {
            color: var(--text-muted);
            margin-bottom: 30px;
        }

        .form-box {
            background: var(--bg-white);
            padding: 40px;
            border-radius: 20px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
        }

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

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

        .form-input {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 0.95rem;
            background: var(--bg-light);
            outline: none;
            transition: border 0.3s;
        }

        .form-input:focus {
            border-color: #6366f1;
            background: var(--bg-white);
        }

        .form-submit-btn {
            width: 100%;
            background: var(--primary-gradient);
            color: white;
            border: none;
            padding: 14px;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 700;
            cursor: pointer;
            box-shadow: var(--shadow-sm);
        }

        .form-submit-btn:hover {
            box-shadow: var(--shadow-lg);
        }

        /* 加盟代理区 */
        .partner-section {
            background: var(--bg-white);
        }

        .partner-banner {
            background: var(--secondary-gradient);
            border-radius: 24px;
            padding: 60px 40px;
            color: white;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .partner-banner h3 {
            font-size: 2.25rem;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .partner-banner p {
            font-size: 1.1rem;
            margin-bottom: 30px;
            opacity: 0.9;
        }

        .partner-btn {
            background: var(--bg-white);
            color: #3b82f6;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 700;
            box-shadow: var(--shadow-md);
        }

        /* 浮动客服面板 */
        .floating-service {
            position: fixed;
            right: 24px;
            bottom: 100px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .service-trigger {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary-gradient);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            box-shadow: var(--shadow-lg);
            cursor: pointer;
            position: relative;
        }

        .service-panel {
            position: absolute;
            right: 70px;
            bottom: 0;
            width: 260px;
            background: var(--bg-white);
            border-radius: 12px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
            padding: 20px;
            display: none;
            flex-direction: column;
            align-items: center;
            text-align: center;
        }

        .service-panel img {
            width: 130px;
            height: 130px;
            margin-bottom: 12px;
            border-radius: 4px;
        }

        .service-panel p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 6px;
        }

        .service-panel.active {
            display: flex;
        }

        /* 页脚 */
        .footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 80px 0 30px;
            border-top: 1px solid #1e293b;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-bottom: 50px;
        }

        .footer-col h5 {
            color: white;
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 12px;
            font-size: 0.9rem;
        }

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

        .footer-bottom {
            padding-top: 30px;
            border-top: 1px solid #1e293b;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            flex-wrap: wrap;
            gap: 15px;
        }

        .footer-bottom p {
            margin: 0;
        }

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

        .friend-links a {
            color: #64748b;
        }

        .friend-links a:hover {
            color: white;
        }

        /* 移动端菜单激活 */
        .nav-menu.active {
            display: flex;
            flex-direction: column;
            position: absolute;
            top: 72px;
            left: 0;
            width: 100%;
            background: var(--bg-white);
            padding: 24px;
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-md);
        }

        /* 响应式媒体查询 */
        @media (max-width: 991px) {
            .nav-menu {
                display: none;
            }
            .menu-toggle {
                display: flex;
            }
            .about-grid, .network-grid, .form-grid, .wiki-grid {
                grid-template-columns: 1fr;
            }
            .hero-title {
                font-size: 2.25rem;
            }
            .stats-grid {
                margin-top: -50px;
            }
            .solution-tab-pane.active {
                grid-template-columns: 1fr;
            }
        }