/* CSS Reset & Variables */
        :root {
            --primary: #10B981; /* 鲜绿 */
            --primary-hover: #059669;
            --primary-light: #ECEFEE;
            --accent: #00E676; /* 夺目绿 */
            --dark: #0F172A; /* 深底 */
            --text-main: #1E293B; /* 深灰正文 */
            --text-muted: #64748B;
            --light-bg: #F8FAFC;
            --border-color: #E2E8F0;
            --max-width: 1200px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans CJK SC", sans-serif;
            color: var(--text-main);
            background-color: #FFFFFF;
            line-height: 1.6;
            overflow-x: hidden;
        }

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

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

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

        .section-header {
            text-align: center;
            margin-bottom: 60px;
        }

        .section-header h2 {
            font-size: 2.2rem;
            color: var(--dark);
            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-color: var(--primary);
            border-radius: 2px;
        }

        .section-header p {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 700px;
            margin: 0 auto;
        }

        section {
            padding: 90px 0;
            border-bottom: 1px solid var(--border-color);
        }

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

        .btn-primary {
            background-color: var(--primary);
            color: #FFFFFF !important;
        }

        .btn-primary:hover {
            background-color: var(--primary-hover);
            box-shadow: 0 4px 14px rgba(16, 185, 129, 0.4);
            transform: translateY(-2px);
        }

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

        .btn-outline:hover {
            background-color: var(--primary);
            color: #FFFFFF !important;
            transform: translateY(-2px);
        }

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

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

        .logo-box {
            display: flex;
            align-items: center;
            gap: 12px;
        }

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

        .brand-name {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: 0.5px;
        }

        .brand-name span {
            color: var(--primary);
        }

        nav ul {
            display: flex;
            list-style: none;
            gap: 24px;
        }

        nav ul li a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-main);
        }

        nav ul li a:hover {
            color: var(--primary);
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        /* Mobile Nav Toggle */
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 6px;
            cursor: pointer;
            border: none;
            background: transparent;
        }

        .nav-toggle span {
            width: 25px;
            height: 3px;
            background-color: var(--dark);
            border-radius: 2px;
            transition: var(--transition);
        }

        /* Hero 首屏 (注意：没有任何图片) */
        .hero {
            background: linear-gradient(135deg, #0F172A 0%, #064E3B 100%);
            color: #FFFFFF;
            padding: 120px 0;
            position: relative;
            overflow: hidden;
            border-bottom: none;
        }

        .hero::before {
            content: '';
            position: absolute;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(16,185,129,0.15) 0%, transparent 70%);
            top: -100px;
            right: -100px;
            pointer-events: none;
        }

        .hero::after {
            content: '';
            position: absolute;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(0,230,118,0.1) 0%, transparent 70%);
            bottom: -50px;
            left: -50px;
            pointer-events: none;
        }

        .hero-content {
            text-align: center;
            max-width: 900px;
            margin: 0 auto;
            position: relative;
            z-index: 10;
        }

        .hero-tag {
            display: inline-block;
            background-color: rgba(16, 185, 129, 0.2);
            border: 1px solid var(--accent);
            color: var(--accent);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 24px;
            letter-spacing: 1px;
            text-transform: uppercase;
        }

        .hero h1 {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 24px;
            letter-spacing: -0.5px;
        }

        .hero h1 span {
            background: linear-gradient(to right, #00E676, #10B981);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero p {
            font-size: 1.25rem;
            color: #CBD5E1;
            margin-bottom: 40px;
            line-height: 1.7;
        }

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

        .hero-btns .btn-outline {
            border-color: #FFFFFF;
            color: #FFFFFF;
        }

        .hero-btns .btn-outline:hover {
            background-color: #FFFFFF;
            color: var(--dark) !important;
        }

        /* 数据指标卡片 */
        .stats-bar {
            background-color: var(--light-bg);
            padding: 40px 0;
            border-bottom: 1px solid var(--border-color);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }

        .stat-item h3 {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 8px;
        }

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

        /* 关于我们 & 加盟代理 */
        .about-section {
            background-color: #FFFFFF;
        }

        .about-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 60px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.8rem;
            color: var(--dark);
            margin-bottom: 20px;
        }

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

        .about-features {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-top: 30px;
        }

        .about-feat-card {
            background-color: var(--light-bg);
            padding: 20px;
            border-radius: 8px;
            border-left: 4px solid var(--primary);
        }

        .about-feat-card h4 {
            color: var(--dark);
            margin-bottom: 8px;
        }

        .about-feat-card p {
            font-size: 0.85rem;
            margin-bottom: 0;
        }

        .network-box {
            background-color: var(--dark);
            color: #FFFFFF;
            padding: 40px;
            border-radius: 16px;
            position: relative;
        }

        .network-box h3 {
            color: var(--accent);
            margin-bottom: 16px;
        }

        .network-box ul {
            list-style: none;
            margin-top: 20px;
        }

        .network-box ul li {
            position: relative;
            padding-left: 24px;
            margin-bottom: 12px;
            font-size: 0.95rem;
        }

        .network-box ul li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--accent);
            font-weight: bold;
        }

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

        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 36px;
            transition: var(--transition);
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
            border-color: var(--primary);
        }

        .service-icon {
            width: 60px;
            height: 60px;
            border-radius: 12px;
            background-color: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 24px;
            color: var(--primary);
            font-size: 1.8rem;
        }

        .service-card h3 {
            font-size: 1.3rem;
            color: var(--dark);
            margin-bottom: 16px;
        }

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

        .service-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .service-tags span {
            background-color: var(--light-bg);
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 0.8rem;
            color: var(--text-main);
        }

        /* 平台支撑滚动带 */
        .platforms-marquee {
            background-color: var(--dark);
            color: #FFFFFF;
            padding: 24px 0;
            overflow: hidden;
            white-space: nowrap;
        }

        .marquee-inner {
            display: inline-block;
            animation: marquee 25s linear infinite;
        }

        .marquee-inner span {
            margin-right: 50px;
            font-size: 1.1rem;
            font-weight: 600;
            color: #94A3B8;
        }

        .marquee-inner span strong {
            color: var(--accent);
        }

        @keyframes marquee {
            0% { transform: translate3d(0, 0, 0); }
            100% { transform: translate3d(-50%, 0, 0); }
        }

        /* 制作与解决方案 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .solution-card {
            position: relative;
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
            overflow: hidden;
            transition: var(--transition);
        }

        .solution-card:hover {
            border-color: var(--primary);
            box-shadow: 0 8px 24px rgba(16,185,129,0.05);
        }

        .solution-card h4 {
            font-size: 1.15rem;
            color: var(--dark);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .solution-card h4::before {
            content: '';
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background-color: var(--primary);
        }

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

        /* 流程步骤 */
        .process-section {
            background-color: var(--light-bg);
        }

        .process-flow {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }

        .process-step {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .step-num {
            width: 40px;
            height: 40px;
            background-color: var(--primary);
            color: #FFFFFF;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            margin: 0 auto 20px auto;
        }

        .process-step h4 {
            margin-bottom: 12px;
            color: var(--dark);
        }

        .process-step p {
            font-size: 0.88rem;
            color: var(--text-muted);
        }

        /* 技术标准 */
        .tech-standards {
            margin-top: 50px;
            padding: 30px;
            background-color: #FFFFFF;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: space-around;
            flex-wrap: wrap;
            gap: 24px;
        }

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

        .standard-item span {
            display: block;
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--dark);
        }

        .standard-item label {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* 案例中心 (图文混排) */
        .portfolio-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .portfolio-item {
            background-color: #FFFFFF;
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .portfolio-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 30px rgba(0,0,0,0.06);
            border-color: var(--primary);
        }

        .portfolio-img-box {
            position: relative;
            background-color: var(--light-bg);
            overflow: hidden;
        }

        .portfolio-img-box img {
            width: 100%;
            height: 220px;
            object-fit: cover;
            transition: var(--transition);
        }

        .portfolio-item:hover .portfolio-img-box img {
            transform: scale(1.05);
        }

        .portfolio-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background-color: rgba(15, 23, 42, 0.8);
            backdrop-filter: blur(4px);
            color: #FFFFFF;
            padding: 4px 12px;
            border-radius: 4px;
            font-size: 0.75rem;
            font-weight: 600;
        }

        .portfolio-info {
            padding: 24px;
        }

        .portfolio-info h3 {
            font-size: 1.15rem;
            margin-bottom: 10px;
            color: var(--dark);
        }

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

        /* 对比评测 */
        .comparison-section {
            background-color: var(--light-bg);
        }

        .rating-box {
            background: linear-gradient(135deg, var(--dark) 0%, #064E3B 100%);
            color: #FFFFFF;
            border-radius: 16px;
            padding: 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 40px;
        }

        .rating-left h3 {
            font-size: 1.8rem;
            margin-bottom: 12px;
        }

        .rating-stars {
            color: #FBBF24;
            font-size: 1.6rem;
            margin-bottom: 8px;
        }

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

        .rating-num span {
            font-size: 1.5rem;
            color: #94A3B8;
            font-weight: 400;
        }

        .comparison-table-wrapper {
            background-color: #FFFFFF;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            overflow-x: auto;
        }

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

        .comparison-table th, .comparison-table td {
            padding: 20px 24px;
            border-bottom: 1px solid var(--border-color);
        }

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

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

        .comparison-table td strong {
            color: var(--primary);
        }

        /* Token 比价看板 */
        .token-comparison {
            margin-top: 60px;
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
        }

        .token-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 24px;
            flex-wrap: wrap;
            gap: 16px;
        }

        .token-header h3 {
            font-size: 1.4rem;
            color: var(--dark);
        }

        .token-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .token-card {
            background-color: var(--light-bg);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 20px;
            text-align: center;
        }

        .token-card h4 {
            margin-bottom: 8px;
            color: var(--dark);
        }

        .token-price {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 4px;
        }

        .token-unit {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* 职业与人工智能培训 */
        .training-section {
            background-color: #FFFFFF;
        }

        .training-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .training-left h3 {
            font-size: 1.8rem;
            color: var(--dark);
            margin-bottom: 20px;
        }

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

        .cert-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .cert-card {
            background-color: var(--light-bg);
            padding: 20px;
            border-radius: 8px;
            border-top: 4px solid var(--primary);
        }

        .cert-card h4 {
            color: var(--dark);
            margin-bottom: 8px;
            font-size: 0.95rem;
        }

        .cert-card p {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        .training-right {
            background-color: var(--dark);
            color: #FFFFFF;
            padding: 40px;
            border-radius: 16px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .training-right h3 {
            color: var(--accent);
            margin-bottom: 20px;
        }

        .training-right ul {
            list-style: none;
        }

        .training-right ul li {
            margin-bottom: 16px;
            padding-left: 28px;
            position: relative;
            font-size: 0.95rem;
        }

        .training-right ul li::before {
            content: '✓';
            color: var(--accent);
            position: absolute;
            left: 0;
            font-weight: 700;
        }

        /* 常见问题 FAQ & 术语百科 */
        .faq-section {
            background-color: var(--light-bg);
        }

        .faq-wrapper {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            margin-bottom: 16px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-question {
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            color: var(--dark);
            user-select: none;
        }

        .faq-question::after {
            content: '+';
            font-size: 1.5rem;
            color: var(--primary);
            transition: var(--transition);
        }

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

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

        .faq-answer-inner {
            padding: 20px 24px;
            color: var(--text-muted);
            font-size: 0.95rem;
            border-top: 1px solid var(--border-color);
        }

        /* AI术语百科 & 自助排查 */
        .helper-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            margin-top: 50px;
        }

        .helper-box {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
        }

        .helper-box h3 {
            font-size: 1.3rem;
            color: var(--dark);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

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

        .helper-list li {
            padding: 12px 0;
            border-bottom: 1px solid var(--border-color);
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.95rem;
        }

        .helper-list li:last-child {
            border-bottom: none;
        }

        .helper-list strong {
            color: var(--primary);
        }

        /* 客户评论卡片 */
        .reviews-section {
            background-color: #FFFFFF;
        }

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

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

        .review-card::before {
            content: '“';
            position: absolute;
            top: 20px;
            left: 20px;
            font-size: 4rem;
            color: rgba(16, 185, 129, 0.1);
            line-height: 1;
        }

        .review-content {
            position: relative;
            z-index: 2;
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

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

        .user-avatar {
            width: 48px;
            height: 48px;
            background-color: var(--primary);
            color: #FFFFFF;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
        }

        .user-info h4 {
            font-size: 0.95rem;
            color: var(--dark);
        }

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

        /* 资讯与知识库 */
        .articles-section {
            background-color: var(--light-bg);
        }

        .articles-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .article-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
            transition: var(--transition);
        }

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

        .article-date {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 8px;
            display: block;
        }

        .article-card h3 {
            font-size: 1.1rem;
            color: var(--dark);
            margin-bottom: 12px;
            line-height: 1.4;
        }

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

        .article-link {
            font-size: 0.9rem;
            color: var(--primary);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .article-link:hover {
            color: var(--primary-hover);
        }

        /* 智能需求匹配与联系我们 */
        .contact-section {
            background-color: #FFFFFF;
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
        }

        .contact-info-panel h3 {
            font-size: 1.8rem;
            color: var(--dark);
            margin-bottom: 24px;
        }

        .contact-details {
            margin-bottom: 40px;
        }

        .contact-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            margin-bottom: 20px;
        }

        .contact-icon {
            width: 44px;
            height: 44px;
            border-radius: 8px;
            background-color: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            flex-shrink: 0;
        }

        .contact-text h4 {
            color: var(--dark);
            margin-bottom: 4px;
        }

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

        .qr-codes {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 20px;
            background-color: var(--light-bg);
            padding: 24px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

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

        .qr-box img {
            width: 120px;
            height: 120px;
            margin: 0 auto 12px auto;
            border-radius: 8px;
        }

        .qr-box p {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--dark);
        }

        .contact-form-panel {
            background-color: var(--light-bg);
            border: 1px solid var(--border-color);
            padding: 40px;
            border-radius: 16px;
        }

        .contact-form-panel h3 {
            font-size: 1.5rem;
            color: var(--dark);
            margin-bottom: 24px;
        }

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

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

        .form-input {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            background-color: #FFFFFF;
            font-size: 0.95rem;
            transition: var(--transition);
        }

        .form-input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(16,185,129,0.1);
        }

        textarea.form-input {
            resize: vertical;
            min-height: 120px;
        }

        /* 友情链接与页脚 */
        footer {
            background-color: var(--dark);
            color: #94A3B8;
            padding: 60px 0 30px 0;
            font-size: 0.9rem;
            border-top: 1px solid #1E293B;
        }

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

        .footer-logo-desc h3 {
            color: #FFFFFF;
            margin-bottom: 16px;
        }

        .footer-logo-desc p {
            line-height: 1.7;
        }

        .footer-nav h4, .footer-links h4 {
            color: #FFFFFF;
            margin-bottom: 20px;
            font-size: 1rem;
        }

        .footer-nav ul {
            list-style: none;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }

        .footer-nav ul li a:hover {
            color: var(--accent);
        }

        .friend-links-box {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .friend-links-box a {
            background-color: #1E293B;
            color: #94A3B8;
            padding: 6px 12px;
            border-radius: 4px;
            font-size: 0.8rem;
            transition: var(--transition);
        }

        .friend-links-box a:hover {
            background-color: var(--primary);
            color: #FFFFFF !important;
        }

        .footer-bottom {
            border-top: 1px solid #1E293B;
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }

        /* 浮动工具栏 */
        .float-toolbar {
            position: fixed;
            right: 24px;
            bottom: 24px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 4px 12px rgba(0,0,0,0.08);
            position: relative;
            transition: var(--transition);
        }

        .float-btn:hover {
            background-color: var(--primary);
            color: #FFFFFF;
            border-color: var(--primary);
        }

        .float-btn svg {
            width: 24px;
            height: 24px;
            fill: currentColor;
        }

        .float-qr-pop {
            position: absolute;
            right: 60px;
            bottom: 0;
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            padding: 16px;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            display: none;
            text-align: center;
            width: 160px;
        }

        .float-qr-pop img {
            width: 120px;
            height: 120px;
            margin-bottom: 8px;
        }

        .float-qr-pop p {
            font-size: 0.8rem;
            color: var(--dark);
            margin: 0;
        }

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

        .back-to-top {
            opacity: 0;
            visibility: hidden;
        }

        .back-to-top.show {
            opacity: 1;
            visibility: visible;
        }

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

        @media (max-width: 768px) {
            nav {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: #FFFFFF;
                border-bottom: 1px solid var(--border-color);
                box-shadow: 0 10px 15px rgba(0,0,0,0.05);
                padding: 20px 0;
            }
            nav.active {
                display: block;
            }
            nav ul {
                flex-direction: column;
                align-items: center;
                gap: 16px;
            }
            .nav-toggle {
                display: flex;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .about-grid, .training-grid, .contact-grid, .helper-grid {
                grid-template-columns: 1fr;
            }
            .services-grid, .portfolio-grid, .reviews-grid, .articles-grid, .solutions-grid, .process-flow {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .token-grid {
                grid-template-columns: 1fr 1fr;
            }
        }