:root {
            --primary: #10b981;
            --primary-dark: #047857;
            --primary-light: #ecfdf5;
            --accent: #34d399;
            --dark: #1f2937;
            --gray: #6b7280;
            --light-gray: #f3f4f6;
            --bg-color: #fafdfc;
            --card-shadow: 0 10px 30px -10px rgba(16, 185, 129, 0.1);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--bg-color);
            color: var(--dark);
            line-height: 1.6;
        }

        body {
            overflow-x: hidden;
        }

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

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section-padding {
            padding: 96px 0;
        }

        /* 顶部导航 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(250, 253, 252, 0.95);
            backdrop-filter: blur(8px);
            z-index: 1000;
            border-bottom: 1px solid rgba(16, 185, 129, 0.1);
        }

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

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

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

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary-dark);
            letter-spacing: 0.5px;
        }

        .nav-links {
            display: flex;
            gap: 24px;
            align-items: center;
        }

        .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--dark);
        }

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

        .nav-btn {
            background-color: var(--primary);
            color: #fff;
            padding: 8px 18px;
            border-radius: 99px;
            font-size: 14px;
            font-weight: 600;
        }

        .nav-btn:hover {
            background-color: var(--primary-dark);
            transform: translateY(-1px);
        }

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            cursor: pointer;
            color: var(--dark);
        }

        /* Hero首屏 - 严禁使用图片 */
        .hero {
            position: relative;
            padding-top: 160px;
            padding-bottom: 120px;
            background: linear-gradient(135deg, #f0fdf4 0%, #e6fcf5 50%, #ffffff 100%);
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -20%;
            right: -10%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(52,211,153,0.12) 0%, rgba(255,255,255,0) 70%);
            border-radius: 50%;
            z-index: 1;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -10%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(16,185,129,0.08) 0%, rgba(255,255,255,0) 70%);
            border-radius: 50%;
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 900px;
            margin: 0 auto;
        }

        .h1-title {
            font-size: clamp(32px, 5vw, 48px);
            font-weight: 800;
            line-height: 1.25;
            color: var(--dark);
            margin-bottom: 24px;
            letter-spacing: -0.5px;
        }

        .h1-title span {
            color: var(--primary-dark);
            background: linear-gradient(120deg, var(--primary) 0%, var(--primary-dark) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: clamp(16px, 2.5vw, 19px);
            color: var(--gray);
            margin-bottom: 40px;
            max-width: 760px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 56px;
        }

        .btn-primary {
            background-color: var(--primary);
            color: #fff;
            padding: 16px 36px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
        }

        .btn-primary:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
        }

        .btn-secondary {
            background-color: #fff;
            color: var(--primary-dark);
            border: 1px solid rgba(16, 185, 129, 0.3);
            padding: 16px 36px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
        }

        .btn-secondary:hover {
            background-color: var(--primary-light);
            transform: translateY(-2px);
        }

        /* 数据指标卡片 - 纯色块 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 24px;
            margin-top: 48px;
        }

        .stat-card {
            background: #ffffff;
            border: 1px solid rgba(16, 185, 129, 0.1);
            padding: 32px 24px;
            border-radius: 12px;
            box-shadow: var(--card-shadow);
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-4px);
            border-color: var(--primary);
        }

        .stat-num {
            font-size: 40px;
            font-weight: 800;
            color: var(--primary-dark);
            line-height: 1;
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 14px;
            color: var(--gray);
            font-weight: 500;
        }

        /* 通用标题样式 */
        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 60px;
        }

        .section-tag {
            display: inline-block;
            background-color: var(--primary-light);
            color: var(--primary-dark);
            padding: 6px 16px;
            border-radius: 99px;
            font-size: 12px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 16px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 16px;
        }

        .section-subtitle {
            color: var(--gray);
            font-size: 16px;
        }

        /* 关于我们 */
        .about-section {
            background-color: #fff;
            border-bottom: 1px solid rgba(16, 185, 129, 0.05);
        }

        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 24px;
            color: var(--dark);
            margin-bottom: 20px;
            font-weight: 700;
        }

        .about-text p {
            color: var(--gray);
            margin-bottom: 24px;
            font-size: 15px;
            line-height: 1.8;
        }

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

        .about-feat-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--dark);
            font-weight: 600;
        }

        .about-feat-item svg {
            color: var(--primary);
            flex-shrink: 0;
        }

        .about-card-display {
            background: linear-gradient(135deg, var(--primary-light) 0%, #ffffff 100%);
            border: 2px dashed rgba(16, 185, 129, 0.2);
            padding: 48px;
            border-radius: 20px;
            position: relative;
        }

        .brand-highlight {
            font-size: 22px;
            font-weight: 800;
            color: var(--primary-dark);
            margin-bottom: 16px;
        }

        .brand-detail {
            font-size: 14px;
            color: var(--gray);
            line-height: 1.7;
        }

        /* 全平台 AIGC 服务 */
        .services-section {
            background-color: var(--bg-color);
        }

        .grid-3col {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
        }

        .service-card {
            background: #ffffff;
            border: 1px solid rgba(16, 185, 129, 0.08);
            border-radius: 16px;
            padding: 40px 32px;
            transition: var(--transition);
            box-shadow: var(--card-shadow);
        }

        .service-card:hover {
            transform: translateY(-6px);
            border-color: var(--accent);
            box-shadow: 0 20px 40px -15px rgba(16, 185, 129, 0.15);
        }

        .service-icon {
            width: 48px;
            height: 48px;
            background-color: var(--primary-light);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            margin-bottom: 24px;
        }

        .service-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 14px;
        }

        .service-desc {
            font-size: 14px;
            color: var(--gray);
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .service-link {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 700;
            color: var(--primary);
        }

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

        /* 标签云 - AI平台支持 */
        .platform-cloud {
            margin-top: 64px;
            text-align: center;
        }

        .platform-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--gray);
            margin-bottom: 24px;
            letter-spacing: 1px;
            text-transform: uppercase;
        }

        .tag-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            max-width: 900px;
            margin: 0 auto;
        }

        .platform-tag {
            background-color: #ffffff;
            border: 1px solid rgba(16, 185, 129, 0.1);
            color: var(--dark);
            padding: 8px 16px;
            border-radius: 99px;
            font-size: 13px;
            font-weight: 500;
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.02);
            transition: var(--transition);
        }

        .platform-tag:hover {
            background-color: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        /* 一站式创作场景 */
        .production-section {
            background-color: #fff;
        }

        .features-alternate {
            display: flex;
            flex-direction: column;
            gap: 80px;
        }

        .alt-item {
            display: flex;
            align-items: center;
            gap: 64px;
        }

        .alt-item:nth-child(even) {
            flex-direction: row-reverse;
        }

        .alt-text {
            flex: 1;
        }

        .alt-media {
            flex: 1;
            background: var(--primary-light);
            border-radius: 20px;
            overflow: hidden;
            border: 1px solid rgba(16, 185, 129, 0.15);
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 320px;
            padding: 24px;
        }

        .alt-media img {
            border-radius: 12px;
            max-width: 100%;
            height: auto;
            box-shadow: 0 10px 25px rgba(0,0,0,0.05);
        }

        .alt-h3 {
            font-size: 26px;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 20px;
        }

        .alt-p {
            color: var(--gray);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 24px;
        }

        /* 解决方案 */
        .solutions-section {
            background-color: var(--bg-color);
        }

        .solutions-tabs-container {
            display: grid;
            grid-template-columns: 280px 1fr;
            gap: 48px;
        }

        .solutions-nav {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .sol-tab-btn {
            background: #ffffff;
            border: 1px solid rgba(16, 185, 129, 0.1);
            padding: 16px 24px;
            border-radius: 8px;
            text-align: left;
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: var(--transition);
            color: var(--dark);
        }

        .sol-tab-btn:hover, .sol-tab-btn.active {
            background-color: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .solutions-content {
            background: #ffffff;
            border-radius: 16px;
            padding: 48px;
            border: 1px solid rgba(16, 185, 129, 0.08);
            box-shadow: var(--card-shadow);
        }

        .sol-pane {
            display: none;
        }

        .sol-pane.active {
            display: block;
            animation: fadeIn 0.4s ease;
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }

        /* 标准化流程 */
        .workflow-section {
            background-color: #fff;
        }

        .steps-container {
            display: flex;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }

        .step-item {
            flex: 1;
            min-width: 200px;
            position: relative;
            text-align: center;
        }

        .step-num {
            width: 48px;
            height: 48px;
            background-color: var(--primary);
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            box-shadow: 0 4px 10px rgba(16, 185, 129, 0.2);
            z-index: 2;
            position: relative;
        }

        .step-item:not(:last-child)::after {
            content: '';
            position: absolute;
            top: 24px;
            left: calc(50% + 24px);
            width: calc(100% - 48px);
            height: 2px;
            background-color: var(--primary-light);
            z-index: 1;
        }

        .step-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .step-desc {
            font-size: 13px;
            color: var(--gray);
        }

        /* 技术标准 */
        .standards-section {
            background-color: var(--bg-color);
        }

        .standards-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .standard-card {
            background-color: #ffffff;
            border: 1px solid rgba(16, 185, 129, 0.08);
            border-radius: 12px;
            padding: 32px;
            transition: var(--transition);
        }

        .standard-card:hover {
            border-color: var(--primary);
            box-shadow: var(--card-shadow);
        }

        .std-name {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 12px;
        }

        .std-desc {
            font-size: 13px;
            color: var(--gray);
            line-height: 1.6;
        }

        /* 客户案例中心 */
        .cases-section {
            background-color: #ffffff;
        }

        .cases-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
            gap: 32px;
        }

        .case-card {
            background: var(--bg-color);
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid rgba(16, 185, 129, 0.08);
            transition: var(--transition);
        }

        .case-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--card-shadow);
        }

        .case-img-wrap {
            position: relative;
            overflow: hidden;
            background-color: #e6fcf5;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 220px;
        }

        .case-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .case-body {
            padding: 24px;
        }

        .case-tag {
            display: inline-block;
            background-color: var(--primary-light);
            color: var(--primary-dark);
            font-size: 11px;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 4px;
            margin-bottom: 12px;
        }

        .case-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 10px;
        }

        .case-desc {
            font-size: 13px;
            color: var(--gray);
            line-height: 1.6;
        }

        /* 对比评测 */
        .evaluation-section {
            background: linear-gradient(135deg, #ffffff 0%, #f0fdf4 100%);
        }

        .eval-box {
            background: #ffffff;
            border-radius: 20px;
            border: 1px solid rgba(16, 185, 129, 0.15);
            padding: 48px;
            box-shadow: var(--card-shadow);
            margin-bottom: 56px;
        }

        .eval-score-area {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 24px;
            border-bottom: 1px solid rgba(16, 185, 129, 0.1);
            padding-bottom: 32px;
            margin-bottom: 32px;
        }

        .eval-score-left {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .score-big {
            font-size: 64px;
            font-weight: 900;
            color: var(--primary-dark);
            line-height: 1;
        }

        .score-meta {
            font-size: 14px;
            color: var(--gray);
        }

        .stars {
            color: #fbbf24;
            font-size: 20px;
            margin-top: 4px;
        }

        .eval-score-right h4 {
            font-size: 20px;
            font-weight: 700;
            color: var(--dark);
        }

        .table-responsive {
            width: 100%;
            overflow-x: auto;
        }

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

        .eval-table th, .eval-table td {
            padding: 16px 20px;
            border-bottom: 1px solid rgba(16, 185, 129, 0.08);
            font-size: 14px;
        }

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

        .eval-table tr:hover td {
            background-color: var(--bg-color);
        }

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

        /* Token 比价参考 & 价格参考 */
        .token-section {
            background-color: var(--bg-color);
        }

        /* 职业技术培训 & 人工智能培训 */
        .training-section {
            background-color: #ffffff;
        }

        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .train-card {
            background-color: var(--bg-color);
            border: 1px solid rgba(16, 185, 129, 0.08);
            border-radius: 12px;
            padding: 32px;
            transition: var(--transition);
        }

        .train-card:hover {
            border-color: var(--primary);
            background-color: #ffffff;
            box-shadow: var(--card-shadow);
        }

        .train-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 16px;
        }

        .train-features {
            list-style: none;
            margin-bottom: 24px;
        }

        .train-features li {
            font-size: 13px;
            color: var(--gray);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .train-features li::before {
            content: "✓";
            color: var(--primary);
            font-weight: bold;
        }

        /* 加盟代理 */
        .agent-section {
            background: linear-gradient(135deg, var(--primary-light) 0%, #ffffff 100%);
            border: 1px solid rgba(16, 185, 129, 0.15);
            border-radius: 24px;
            padding: 64px 48px;
        }

        .agent-flex {
            display: flex;
            align-items: center;
            gap: 48px;
            flex-wrap: wrap;
        }

        .agent-text {
            flex: 1;
            min-width: 300px;
        }

        .agent-text h3 {
            font-size: 28px;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 16px;
        }

        .agent-text p {
            color: var(--gray);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .agent-btn {
            background-color: var(--primary-dark);
            color: #fff;
            padding: 14px 28px;
            border-radius: 8px;
            font-weight: 600;
            display: inline-block;
        }

        .agent-btn:hover {
            background-color: var(--primary);
            transform: translateY(-2px);
        }

        /* 帮助中心 / 常见问题自助排查 / AI术语百科 */
        .help-section {
            background-color: var(--bg-color);
        }

        .help-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
            margin-top: 48px;
        }

        .help-card {
            background: #ffffff;
            border-radius: 12px;
            padding: 28px;
            border: 1px solid rgba(16, 185, 129, 0.05);
        }

        .help-card h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 12px;
        }

        .help-card p {
            font-size: 13px;
            color: var(--gray);
            line-height: 1.6;
        }

        /* FAQ折叠面板 */
        .faq-section {
            background-color: #ffffff;
        }

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

        .faq-item {
            border: 1px solid rgba(16, 185, 129, 0.08);
            border-radius: 8px;
            background-color: var(--bg-color);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-header {
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            font-size: 15px;
            color: var(--dark);
        }

        .faq-header:hover {
            color: var(--primary-dark);
        }

        .faq-icon {
            font-size: 18px;
            transition: transform 0.3s ease;
        }

        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
            padding: 0 24px;
            font-size: 14px;
            color: var(--gray);
            line-height: 1.7;
        }

        .faq-item.active {
            border-color: var(--primary);
            background-color: #ffffff;
        }

        .faq-item.active .faq-header {
            color: var(--primary);
        }

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

        .faq-item.active .faq-content {
            max-height: 1000px;
            padding-bottom: 20px;
            transition: max-height 0.3s cubic-bezier(1, 0, 1, 0);
        }

        /* 客户评论卡片 */
        .reviews-section {
            background-color: var(--bg-color);
        }

        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }

        .review-card {
            background-color: #ffffff;
            border: 1px solid rgba(16, 185, 129, 0.06);
            border-radius: 12px;
            padding: 32px;
            box-shadow: var(--card-shadow);
        }

        .review-text {
            font-size: 14px;
            color: var(--gray);
            line-height: 1.7;
            margin-bottom: 24px;
            font-style: italic;
        }

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

        .user-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background-color: var(--primary-light);
            color: var(--primary-dark);
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
        }

        .user-info h5 {
            font-size: 14px;
            font-weight: 700;
            color: var(--dark);
        }

        .user-info p {
            font-size: 12px;
            color: var(--gray);
        }

        /* 行业资讯 / 知识库 */
        .articles-section {
            background-color: #ffffff;
        }

        .articles-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .article-card {
            background: var(--bg-color);
            border: 1px solid rgba(16, 185, 129, 0.08);
            border-radius: 8px;
            padding: 24px;
            transition: var(--transition);
        }

        .article-card:hover {
            border-color: var(--primary);
            background-color: #ffffff;
        }

        .article-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .article-link {
            font-size: 12px;
            color: var(--primary);
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

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

        /* 智能需求匹配与联系我们 - 表单 */
        .contact-section {
            background-color: var(--bg-color);
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
        }

        .contact-info {
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .contact-details {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .contact-item {
            display: flex;
            gap: 16px;
        }

        .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;
            flex-shrink: 0;
        }

        .contact-content h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--dark);
        }

        .contact-content p, .contact-content a {
            font-size: 14px;
            color: var(--gray);
        }

        .contact-content a:hover {
            color: var(--primary);
        }

        .qrcode-container {
            background-color: #ffffff;
            border: 1px solid rgba(16, 185, 129, 0.1);
            border-radius: 12px;
            padding: 24px;
            text-align: center;
            width: fit-content;
            margin-top: 32px;
        }

        .qrcode-container img {
            width: 130px;
            height: 130px;
            margin-bottom: 8px;
        }

        .qrcode-container p {
            font-size: 12px;
            color: var(--gray);
            font-weight: 600;
        }

        .form-card {
            background: #ffffff;
            border-radius: 16px;
            padding: 40px;
            border: 1px solid rgba(16, 185, 129, 0.08);
            box-shadow: var(--card-shadow);
        }

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

        .form-label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid rgba(16, 185, 129, 0.2);
            border-radius: 6px;
            background-color: var(--bg-color);
            font-family: inherit;
            font-size: 14px;
            color: var(--dark);
            transition: var(--transition);
        }

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

        textarea.form-control {
            height: 120px;
            resize: none;
        }

        .submit-btn {
            width: 100%;
            background-color: var(--primary);
            color: #fff;
            padding: 14px;
            border: none;
            border-radius: 6px;
            font-size: 15px;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
        }

        .submit-btn:hover {
            background-color: var(--primary-dark);
        }

        /* 友情链接与底部导航 */
        footer {
            background-color: #111827;
            color: #9ca3af;
            padding: 80px 0 32px;
            font-size: 14px;
            border-top: 2px solid var(--primary-dark);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 40px;
            margin-bottom: 56px;
        }

        .footer-brand h4 {
            color: #ffffff;
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .footer-brand p {
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .footer-links-title {
            color: #ffffff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
        }

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

        .footer-ul li {
            margin-bottom: 12px;
        }

        .footer-ul a:hover {
            color: #ffffff;
        }

        .friend-links {
            border-top: 1px solid #1f2937;
            padding-top: 32px;
            margin-bottom: 32px;
        }

        .friend-links-title {
            color: #ffffff;
            font-size: 14px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .friend-links-list {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
        }

        .friend-links-list a {
            color: #9ca3af;
        }

        .friend-links-list a:hover {
            color: #ffffff;
        }

        .footer-bottom {
            border-top: 1px solid #1f2937;
            padding-top: 32px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }

        /* 侧边浮动 */
        .fixed-kefu {
            position: fixed;
            right: 24px;
            bottom: 24px;
            z-index: 999;
            background-color: #ffffff;
            border: 1px solid rgba(16, 185, 129, 0.2);
            border-radius: 50%;
            width: 56px;
            height: 56px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
        }

        .fixed-kefu:hover {
            transform: scale(1.05);
            border-color: var(--primary);
        }

        .kefu-popover {
            position: absolute;
            bottom: 72px;
            right: 0;
            background: #ffffff;
            border-radius: 12px;
            padding: 16px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
            border: 1px solid rgba(16, 185, 129, 0.1);
            display: none;
            text-align: center;
            width: 160px;
        }

        .fixed-kefu:hover .kefu-popover {
            display: block;
        }

        .kefu-popover img {
            width: 100%;
            height: auto;
            border-radius: 6px;
            margin-bottom: 8px;
        }

        .kefu-popover p {
            font-size: 12px;
            color: var(--dark);
            font-weight: 600;
        }

        /* 响应式样式适配 */
        @media (max-width: 992px) {
            .about-grid, .contact-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .solutions-tabs-container {
                grid-template-columns: 1fr;
            }
            .solutions-nav {
                flex-direction: row;
                overflow-x: auto;
                padding-bottom: 8px;
            }
            .sol-tab-btn {
                white-space: nowrap;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 72px;
                left: 0;
                width: 100%;
                background-color: #ffffff;
                padding: 24px;
                border-bottom: 1px solid rgba(16, 185, 129, 0.1);
                box-shadow: 0 10px 15px -3px rgba(0,0,0,0.05);
            }
            .nav-links.active {
                display: flex;
            }
            .menu-toggle {
                display: block;
            }
            .alt-item, .alt-item:nth-child(even) {
                flex-direction: column;
                gap: 32px;
            }
            .eval-score-area {
                flex-direction: column;
                align-items: flex-start;
            }
            .steps-container {
                flex-direction: column;
                gap: 32px;
            }
            .step-item:not(:last-child)::after {
                display: none;
            }
        }