:root {
            --primary: #3b82f6; /* 科技蓝 */
            --secondary: #ec4899; /* 撞色亮粉 */
            --accent: #f97316; /* 撞色暖橙 */
            --dark: #0f172a; /* 极深灰 */
            --light: #f8fafc; /* 背景浅灰 */
            --white: #ffffff;
            --gray-100: #f1f5f9;
            --gray-200: #e2e8f0;
            --gray-600: #475569;
            --gray-700: #334155;
            --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font);
            background-color: var(--light);
            color: var(--dark);
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* 统一外层居中容器 */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 顶部导航 */
        header {
            background-color: rgba(255, 255, 255, 0.95);
            border-bottom: 2px solid var(--dark);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 0 var(--dark);
        }

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

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

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

        .brand-text {
            font-size: 1.25rem;
            font-weight: 900;
            color: var(--dark);
            text-transform: uppercase;
            letter-spacing: 1px;
        }

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

        .nav-links {
            display: flex;
            list-style: none;
            gap: 20px;
        }

        .nav-links a {
            text-decoration: none;
            color: var(--dark);
            font-weight: 700;
            font-size: 0.9rem;
            transition: all 0.2s ease;
            position: relative;
            padding: 5px 0;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background-color: var(--secondary);
            transition: width 0.2s ease;
        }

        .nav-links a:hover::after {
            width: 100%;
        }

        .nav-btn {
            background-color: var(--secondary);
            color: var(--white);
            border: 2px solid var(--dark);
            padding: 6px 15px;
            font-weight: 700;
            text-decoration: none;
            border-radius: 4px;
            box-shadow: 2px 2px 0 var(--dark);
            transition: all 0.2s ease;
        }

        .nav-btn:hover {
            transform: translate(-2px, -2px);
            box-shadow: 4px 4px 0 var(--dark);
        }

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

        /* 首屏 Hero 区域 (无图片) */
        .hero {
            background: linear-gradient(135deg, #e0f2fe 0%, #fae8ff 100%);
            border-bottom: 4px solid var(--dark);
            padding: 80px 0 100px 0;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: radial-gradient(var(--dark) 1px, transparent 1px);
            background-size: 24px 24px;
            opacity: 0.05;
        }

        .hero-inner {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            position: relative;
            z-index: 10;
        }

        .hero-badge {
            background-color: var(--dark);
            color: #00f2fe;
            padding: 6px 16px;
            font-weight: 800;
            border-radius: 20px;
            font-size: 0.85rem;
            margin-bottom: 24px;
            letter-spacing: 2px;
            border: 2px solid var(--white);
            box-shadow: 0 4px 10px rgba(0,0,0,0.1);
        }

        .hero-title {
            font-size: 2.8rem;
            font-weight: 900;
            line-height: 1.2;
            color: var(--dark);
            margin-bottom: 24px;
            max-width: 900px;
        }

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

        .hero-desc {
            font-size: 1.15rem;
            color: var(--gray-700);
            max-width: 700px;
            margin-bottom: 40px;
        }

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

        .btn-primary {
            background-color: var(--accent);
            color: var(--white);
            border: 3px solid var(--dark);
            padding: 12px 30px;
            font-size: 1.1rem;
            font-weight: 800;
            text-decoration: none;
            border-radius: 8px;
            box-shadow: 4px 4px 0 var(--dark);
            transition: all 0.2s ease;
        }

        .btn-primary:hover {
            transform: translate(-3px, -3px);
            box-shadow: 7px 7px 0 var(--dark);
        }

        .btn-secondary {
            background-color: var(--white);
            color: var(--dark);
            border: 3px solid var(--dark);
            padding: 12px 30px;
            font-size: 1.1rem;
            font-weight: 800;
            text-decoration: none;
            border-radius: 8px;
            box-shadow: 4px 4px 0 var(--dark);
            transition: all 0.2s ease;
        }

        .btn-secondary:hover {
            transform: translate(-3px, -3px);
            box-shadow: 7px 7px 0 var(--dark);
        }

        /* 核心版块统一样式 */
        section {
            padding: 80px 0;
            border-bottom: 2px solid var(--gray-200);
        }

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

        .section-tag {
            color: var(--secondary);
            font-weight: 800;
            text-transform: uppercase;
            font-size: 0.9rem;
            letter-spacing: 1.5px;
            display: block;
            margin-bottom: 10px;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--dark);
        }

        /* 关于我们 */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.6rem;
            font-weight: 800;
            margin-bottom: 20px;
            color: var(--dark);
        }

        .about-text p {
            color: var(--gray-600);
            margin-bottom: 15px;
        }

        .about-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 30px;
        }

        .about-feature-item {
            background-color: var(--white);
            border: 2px solid var(--dark);
            padding: 20px;
            border-radius: 6px;
            box-shadow: 3px 3px 0 var(--dark);
        }

        .about-feature-item h4 {
            font-weight: 800;
            margin-bottom: 8px;
            color: var(--primary);
        }

        .about-feature-item p {
            font-size: 0.85rem;
            margin-bottom: 0;
        }

        .about-image-wrapper {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            padding: 10px;
            border: 3px solid var(--dark);
            border-radius: 12px;
            box-shadow: 8px 8px 0 var(--dark);
        }

        .about-image-wrapper img {
            width: 100%;
            height: auto;
            border-radius: 8px;
            border: 2px solid var(--dark);
            display: block;
            background-color: var(--white);
        }

        /* 数据指标 */
        .stats-bar {
            background-color: var(--dark);
            color: var(--white);
            padding: 40px 0;
            border-top: 3px solid var(--dark);
            border-bottom: 3px solid var(--dark);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            text-align: center;
        }

        .stat-card h3 {
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--accent);
            margin-bottom: 5px;
        }

        .stat-card p {
            font-size: 0.9rem;
            color: var(--gray-200);
            letter-spacing: 1px;
        }

        /* 全平台 AIGC 服务 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background-color: var(--white);
            border: 3px solid var(--dark);
            padding: 30px;
            border-radius: 10px;
            box-shadow: 5px 5px 0 var(--dark);
            transition: all 0.2s ease;
        }

        .service-card:hover {
            transform: translate(-4px, -4px);
            box-shadow: 9px 9px 0 var(--dark);
        }

        .service-icon {
            font-size: 2rem;
            margin-bottom: 20px;
            display: inline-block;
            background-color: #eff6ff;
            padding: 10px 15px;
            border-radius: 8px;
            border: 2px solid var(--dark);
        }

        .service-card h3 {
            font-size: 1.4rem;
            font-weight: 800;
            margin-bottom: 15px;
        }

        .service-card p {
            color: var(--gray-600);
            font-size: 0.9rem;
            margin-bottom: 20px;
        }

        .model-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }

        .model-tag {
            background-color: var(--gray-100);
            border: 1px solid var(--dark);
            font-size: 0.75rem;
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 600;
        }

        /* 一站式AIGC制作场景 */
        .scene-container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .scene-list {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .scene-item {
            background-color: var(--white);
            border: 2px solid var(--dark);
            border-radius: 8px;
            padding: 20px;
            cursor: pointer;
            box-shadow: 4px 4px 0 var(--dark);
            transition: all 0.2s ease;
        }

        .scene-item:hover, .scene-item.active {
            background-color: #faf5ff;
            border-color: var(--secondary);
            transform: translateX(5px);
        }

        .scene-item h4 {
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .scene-item h4::before {
            content: "✦";
            color: var(--secondary);
        }

        .scene-item p {
            font-size: 0.85rem;
            color: var(--gray-600);
        }

        .scene-detail {
            background-color: var(--white);
            border: 3px solid var(--dark);
            border-radius: 12px;
            padding: 30px;
            box-shadow: 6px 6px 0 var(--dark);
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .scene-detail-title {
            font-size: 1.6rem;
            font-weight: 900;
            color: var(--secondary);
            margin-bottom: 15px;
        }

        .scene-features-list {
            margin: 20px 0;
            list-style: none;
        }

        .scene-features-list li {
            position: relative;
            padding-left: 25px;
            margin-bottom: 12px;
            font-weight: 600;
        }

        .scene-features-list li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--primary);
            font-weight: 900;
        }

        /* 流程步骤 */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .process-card {
            background-color: var(--white);
            border: 2px solid var(--dark);
            border-radius: 8px;
            padding: 25px;
            position: relative;
            box-shadow: 4px 4px 0 var(--dark);
        }

        .process-num {
            position: absolute;
            top: -15px;
            left: 20px;
            background-color: var(--accent);
            color: var(--white);
            border: 2px solid var(--dark);
            font-weight: 900;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 2px 2px 0 var(--dark);
        }

        .process-card h3 {
            margin-top: 10px;
            font-size: 1.25rem;
            font-weight: 800;
            margin-bottom: 10px;
        }

        .process-card p {
            font-size: 0.85rem;
            color: var(--gray-600);
        }

        /* 解决方案 & 技术标准 */
        .grid-two-col {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .tech-box, .sol-box {
            background-color: var(--white);
            border: 3px solid var(--dark);
            border-radius: 10px;
            padding: 30px;
            box-shadow: 5px 5px 0 var(--dark);
        }

        .tech-box h3, .sol-box h3 {
            font-size: 1.5rem;
            font-weight: 800;
            margin-bottom: 20px;
            border-bottom: 2px solid var(--dark);
            padding-bottom: 10px;
        }

        .list-unstyled {
            list-style: none;
        }

        .list-unstyled li {
            padding: 10px 0;
            border-bottom: 1px dashed var(--gray-200);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

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

        .list-unstyled li span {
            font-size: 0.85rem;
            color: var(--gray-600);
        }

        /* 案例展示 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .case-card {
            background-color: var(--white);
            border: 3px solid var(--dark);
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 5px 5px 0 var(--dark);
        }

        .case-img-container {
            border-bottom: 2px solid var(--dark);
            overflow: hidden;
            background-color: var(--gray-100);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .case-img-container img {
            width: 100%;
            height: auto;
            max-height: 220px;
            object-fit: cover;
            display: block;
        }

        .case-body {
            padding: 20px;
        }

        .case-tag {
            display: inline-block;
            background-color: var(--gray-100);
            border: 1px solid var(--dark);
            padding: 2px 8px;
            font-size: 0.75rem;
            font-weight: 700;
            margin-bottom: 10px;
            border-radius: 4px;
        }

        .case-title {
            font-weight: 800;
            font-size: 1.15rem;
            margin-bottom: 10px;
        }

        .case-desc {
            font-size: 0.85rem;
            color: var(--gray-600);
        }

        /* 对比评测表格 */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border: 3px solid var(--dark);
            border-radius: 8px;
            box-shadow: 6px 6px 0 var(--dark);
        }

        table {
            width: 100%;
            border-collapse: collapse;
            background-color: var(--white);
            text-align: left;
            min-width: 600px;
        }

        th, td {
            padding: 15px 20px;
            border-bottom: 1px solid var(--gray-200);
        }

        th {
            background-color: var(--dark);
            color: var(--white);
            font-weight: 800;
        }

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

        tr.highlight {
            background-color: #fef2f2;
        }

        .badge-star {
            color: var(--accent);
            font-weight: 900;
        }

        .badge-score {
            background-color: var(--secondary);
            color: var(--white);
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 800;
            font-size: 0.8rem;
        }

        /* 培训版块 */
        .training-container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .training-info {
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .training-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 15px;
        }

        .training-item {
            background-color: var(--white);
            border: 2px solid var(--dark);
            border-radius: 8px;
            padding: 20px;
            box-shadow: 4px 4px 0 var(--dark);
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .training-icon {
            font-size: 1.8rem;
            background-color: #fef3c7;
            padding: 10px;
            border: 2px solid var(--dark);
            border-radius: 50%;
            flex-shrink: 0;
        }

        .training-details h4 {
            font-weight: 800;
            color: var(--dark);
        }

        .training-details p {
            font-size: 0.85rem;
            color: var(--gray-600);
        }

        /* Token 比价 */
        .token-header-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-bottom: 20px;
        }

        .token-item {
            background-color: var(--white);
            border: 2px solid var(--dark);
            padding: 15px;
            border-radius: 6px;
            box-shadow: 3px 3px 0 var(--dark);
            text-align: center;
        }

        .token-name {
            font-weight: 800;
            font-size: 1rem;
            margin-bottom: 5px;
        }

        .token-price {
            font-size: 1.25rem;
            font-weight: 900;
            color: var(--secondary);
        }

        .token-note {
            font-size: 0.75rem;
            color: var(--gray-600);
        }

        /* 常见问题 (FAQ) 折叠面板 */
        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .faq-item {
            background-color: var(--white);
            border: 2px solid var(--dark);
            border-radius: 6px;
            overflow: hidden;
            box-shadow: 3px 3px 0 var(--dark);
        }

        .faq-question {
            padding: 15px 20px;
            background-color: var(--white);
            font-weight: 800;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 2px solid var(--dark);
        }

        .faq-answer {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: all 0.3s cubic-bezier(0, 1, 0, 1);
            background-color: var(--gray-100);
            font-size: 0.85rem;
            color: var(--gray-600);
        }

        .faq-item.active .faq-answer {
            padding: 15px 20px;
            max-height: 1000px;
            border-top: 1px solid var(--dark);
        }

        .faq-question::after {
            content: "+";
            font-size: 1.2rem;
            font-weight: 900;
        }

        .faq-item.active .faq-question::after {
            content: "−";
        }

        /* 百科词条、自助排查、加盟代理 */
        .agent-banner {
            background: linear-gradient(135deg, #ff007f 0%, #7000ff 100%);
            color: var(--white);
            border: 3px solid var(--dark);
            border-radius: 12px;
            padding: 50px;
            box-shadow: 6px 6px 0 var(--dark);
            text-align: center;
            position: relative;
        }

        .agent-banner h3 {
            font-size: 2rem;
            font-weight: 900;
            margin-bottom: 15px;
        }

        .agent-banner p {
            max-width: 700px;
            margin: 0 auto 30px auto;
            color: rgba(255,255,255,0.9);
        }

        /* 客户评论 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .review-card {
            background-color: var(--white);
            border: 2px solid var(--dark);
            border-radius: 8px;
            padding: 25px;
            box-shadow: 4px 4px 0 var(--dark);
        }

        .review-user {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 15px;
        }

        .user-avatar {
            width: 45px;
            height: 45px;
            border-radius: 50%;
            background-color: var(--primary);
            color: var(--white);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            border: 2px solid var(--dark);
        }

        .user-info h4 {
            font-size: 0.95rem;
            font-weight: 800;
        }

        .user-info p {
            font-size: 0.75rem;
            color: var(--gray-600);
        }

        .review-content {
            font-size: 0.85rem;
            color: var(--gray-700);
        }

        /* 资讯 / 知识库 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .news-item {
            background-color: var(--white);
            border: 2px solid var(--dark);
            border-radius: 6px;
            padding: 20px;
            box-shadow: 3px 3px 0 var(--dark);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .news-title {
            font-weight: 800;
            margin-bottom: 10px;
            font-size: 1.05rem;
            text-decoration: none;
            color: var(--dark);
        }

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

        .news-meta {
            font-size: 0.75rem;
            color: var(--gray-600);
            display: flex;
            justify-content: space-between;
        }

        /* 联系我们 & 表单 */
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 40px;
        }

        .contact-info {
            background-color: var(--white);
            border: 3px solid var(--dark);
            border-radius: 10px;
            padding: 30px;
            box-shadow: 5px 5px 0 var(--dark);
        }

        .info-item {
            display: flex;
            align-items: flex-start;
            gap: 15px;
            margin-bottom: 25px;
        }

        .info-icon {
            font-size: 1.5rem;
            background-color: #f0fdf4;
            padding: 8px 12px;
            border-radius: 6px;
            border: 2px solid var(--dark);
        }

        .info-detail h4 {
            font-weight: 800;
            font-size: 1rem;
        }

        .info-detail p {
            font-size: 0.85rem;
            color: var(--gray-600);
        }

        .qr-codes {
            display: flex;
            gap: 20px;
            margin-top: 30px;
        }

        .qr-item {
            text-align: center;
        }

        .qr-item img {
            width: 110px;
            height: 110px;
            border: 2px solid var(--dark);
            border-radius: 6px;
            margin-bottom: 8px;
        }

        .qr-item p {
            font-size: 0.75rem;
            font-weight: 800;
        }

        .form-box {
            background-color: var(--white);
            border: 3px solid var(--dark);
            border-radius: 10px;
            padding: 30px;
            box-shadow: 5px 5px 0 var(--dark);
        }

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

        .form-group label {
            display: block;
            font-weight: 800;
            margin-bottom: 8px;
            font-size: 0.9rem;
        }

        .form-control {
            width: 100%;
            border: 2px solid var(--dark);
            border-radius: 6px;
            padding: 10px 15px;
            font-family: var(--font);
            font-size: 0.9rem;
            outline: none;
        }

        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
        }

        .btn-submit {
            background-color: var(--dark);
            color: var(--white);
            border: none;
            width: 100%;
            padding: 12px;
            font-size: 1rem;
            font-weight: 800;
            border-radius: 6px;
            cursor: pointer;
            box-shadow: 3px 3px 0 var(--secondary);
            transition: all 0.2s ease;
        }

        .btn-submit:hover {
            transform: translate(-2px, -2px);
            box-shadow: 5px 5px 0 var(--secondary);
        }

        /* 标签云与百科 */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .wiki-tag {
            background-color: var(--white);
            border: 2px solid var(--dark);
            padding: 5px 12px;
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--dark);
            box-shadow: 2px 2px 0 var(--dark);
            text-decoration: none;
            transition: all 0.2s ease;
        }

        .wiki-tag:hover {
            transform: translate(-1px, -1px);
            box-shadow: 3px 3px 0 var(--dark);
            background-color: var(--gray-100);
        }

        /* 页脚 */
        footer {
            background-color: var(--dark);
            color: var(--white);
            padding: 60px 0 30px 0;
            border-top: 4px solid var(--dark);
        }

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

        .footer-logo-area img {
            max-width: 150px;
            margin-bottom: 20px;
        }

        .footer-logo-area p {
            font-size: 0.8rem;
            color: var(--gray-200);
        }

        .footer-col h4 {
            font-size: 1.1rem;
            font-weight: 800;
            margin-bottom: 20px;
            color: var(--accent);
        }

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

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

        .footer-links a {
            color: var(--gray-200);
            text-decoration: none;
            font-size: 0.85rem;
            transition: color 0.2s ease;
        }

        .footer-links a:hover {
            color: var(--secondary);
        }

        .footer-friends-links {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .footer-friends-links a {
            color: var(--gray-200);
            text-decoration: none;
            font-size: 0.85rem;
            background-color: rgba(255, 255, 255, 0.1);
            padding: 4px 8px;
            border-radius: 4px;
        }

        .footer-friends-links a:hover {
            background-color: var(--secondary);
            color: var(--white);
        }

        .footer-bottom {
            border-top: 1px solid var(--gray-700);
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: var(--gray-200);
        }

        /* 浮动客服 */
        .float-kefu {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            background-color: var(--secondary);
            border: 3px solid var(--dark);
            border-radius: 50%;
            width: 60px;
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 4px 4px 0 var(--dark);
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .float-kefu:hover {
            transform: translate(-3px, -3px);
            box-shadow: 7px 7px 0 var(--dark);
        }

        .float-kefu svg {
            width: 28px;
            height: 28px;
            fill: var(--white);
        }

        .kefu-popup {
            position: absolute;
            bottom: 75px;
            right: 0;
            background-color: var(--white);
            border: 3px solid var(--dark);
            border-radius: 8px;
            padding: 20px;
            box-shadow: 6px 6px 0 var(--dark);
            display: none;
            width: 220px;
            text-align: center;
        }

        .kefu-popup img {
            width: 150px;
            height: 150px;
            border: 2px solid var(--dark);
            margin-bottom: 10px;
        }

        .kefu-popup p {
            font-size: 0.8rem;
            color: var(--dark);
            font-weight: 800;
        }

        .float-kefu:hover .kefu-popup {
            display: block;
        }

        /* 响应式适配 */
        @media (max-width: 1024px) {
            .services-grid, .case-grid, .reviews-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 30px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .menu-toggle {
                display: block;
            }
            nav {
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: var(--white);
                border-bottom: 2px solid var(--dark);
                flex-direction: column;
                padding: 20px;
                display: none;
                box-shadow: 0 4px 10px rgba(0,0,0,0.1);
            }
            nav.active {
                display: flex;
            }
            .nav-links {
                flex-direction: column;
                width: 100%;
                text-align: center;
                gap: 15px;
            }
            .hero-title {
                font-size: 2rem;
            }
            .about-grid, .scene-container, .grid-two-col, .training-container, .faq-grid, .contact-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .services-grid, .case-grid, .reviews-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 10px;
                text-align: center;
            }
        }