:root {
            --primary: #FF5500;
            --primary-hover: #E04B00;
            --accent: #FFAA00;
            --bg-main: #FAF8F6;
            --bg-card: #FFFFFF;
            --text-main: #2A2725;
            --text-muted: #6E6661;
            --text-light: #FFFFFF;
            --border-color: #EAE6E2;
            --shadow-soft: 0 10px 30px rgba(255, 85, 0, 0.04);
            --shadow-hover: 0 15px 35px rgba(255, 85, 0, 0.1);
            --max-width: 1200px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--bg-main);
            color: var(--text-main);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

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

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

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 顶部导航 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
        }

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

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

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

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

        .nav-links a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-main);
        }

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

        .nav-btn {
            background-color: var(--primary);
            color: var(--text-light) !important;
            padding: 8px 18px;
            border-radius: 4px;
            font-weight: 600;
        }

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

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

        /* Hero首屏 - 严格无图，使用纯色与渐变 */
        .hero {
            padding: 160px 0 100px 0;
            background: linear-gradient(135deg, #FFF9F5 0%, #FFF0E6 100%);
            text-align: center;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--border-color);
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -10%;
            left: -10%;
            width: 40%;
            height: 60%;
            background: radial-gradient(circle, rgba(255,85,0,0.08) 0%, rgba(255,255,255,0) 70%);
            pointer-events: none;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -10%;
            right: -10%;
            width: 50%;
            height: 60%;
            background: radial-gradient(circle, rgba(255,170,0,0.06) 0%, rgba(255,255,255,0) 70%);
            pointer-events: none;
        }

        .hero-tag {
            display: inline-block;
            background-color: rgba(255, 85, 0, 0.1);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
            letter-spacing: 1px;
        }

        .hero h1 {
            font-size: 42px;
            line-height: 1.2;
            color: var(--text-main);
            margin-bottom: 24px;
            font-weight: 800;
            letter-spacing: -0.5px;
        }

        .hero p {
            font-size: 18px;
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto 40px auto;
        }

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

        .btn-main {
            background-color: var(--primary);
            color: var(--text-light);
            padding: 14px 32px;
            border-radius: 6px;
            font-size: 16px;
            font-weight: 600;
            box-shadow: 0 4px 15px rgba(255, 85, 0, 0.2);
            transition: all 0.3s ease;
        }

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

        .btn-sub {
            background-color: var(--bg-card);
            color: var(--text-main);
            border: 1px solid var(--border-color);
            padding: 14px 32px;
            border-radius: 6px;
            font-size: 16px;
            font-weight: 600;
            transition: all 0.3s ease;
        }

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

        /* 全局通用结构 */
        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
        }

        .section-alt {
            background-color: var(--bg-card);
        }

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

        .section-title {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 50%;
            transform: translateX(-50%);
            width: 40px;
            height: 3px;
            background-color: var(--primary);
        }

        .section-desc {
            color: var(--text-muted);
            font-size: 16px;
            max-width: 700px;
            margin: 0 auto;
        }

        /* 2. 关于我们 */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

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

        .about-text p {
            color: var(--text-muted);
            margin-bottom: 20px;
            font-size: 15px;
        }

        .about-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .badge-item {
            background-color: var(--bg-main);
            border: 1px solid var(--border-color);
            padding: 6px 12px;
            border-radius: 4px;
            font-size: 13px;
            color: var(--text-main);
        }

        /* 数据指标卡片 (融入关于我们) */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .stat-card {
            background-color: var(--bg-main);
            border: 1px solid var(--border-color);
            padding: 24px 15px;
            border-radius: 8px;
            text-align: center;
            transition: all 0.3s ease;
        }

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

        .stat-num {
            font-size: 36px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 5px;
        }

        .stat-label {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* 3. 全平台AIGC服务体系 */
        .service-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
            margin-bottom: 40px;
        }

        .service-card {
            background-color: var(--bg-main);
            border-top: 4px solid var(--primary);
            border-left: 1px solid var(--border-color);
            border-right: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            padding: 30px;
            border-radius: 0 0 8px 8px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
        }

        .service-card h4 {
            font-size: 20px;
            color: var(--text-main);
            margin-bottom: 15px;
        }

        .service-card p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 15px;
        }

        .model-list-wrapper {
            margin-top: 40px;
            padding: 20px;
            background-color: var(--bg-main);
            border-radius: 8px;
            border: 1px solid var(--border-color);
        }

        .model-list-wrapper h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 15px;
            text-align: center;
        }

        .model-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 8px;
        }

        .model-tag {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 12px;
            color: var(--text-main);
            transition: all 0.2s ease;
        }

        .model-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        /* 4. 全自动AIGC制作流程 */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 24px;
            position: relative;
        }

        .process-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 30px 20px;
            border-radius: 8px;
            text-align: center;
            position: relative;
            transition: all 0.3s ease;
        }

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

        .process-num {
            width: 40px;
            height: 40px;
            background-color: var(--primary);
            color: var(--text-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 18px;
            margin: 0 auto 20px auto;
        }

        .process-card h4 {
            font-size: 18px;
            color: var(--text-main);
            margin-bottom: 10px;
        }

        .process-card p {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* 5. 全行业解决方案 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .solution-card {
            background-color: var(--bg-main);
            border: 1px solid var(--border-color);
            padding: 30px;
            border-radius: 8px;
            transition: all 0.3s ease;
        }

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

        .solution-card h4 {
            font-size: 18px;
            color: var(--text-main);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .solution-card h4::before {
            content: '';
            width: 6px;
            height: 18px;
            background-color: var(--primary);
            border-radius: 3px;
            display: inline-block;
        }

        .solution-card p {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* 6. 全国服务网络 */
        .network-grid {
            display: grid;
            grid-template-columns: 1fr 2fr;
            gap: 40px;
            align-items: center;
        }

        .network-text h4 {
            font-size: 22px;
            margin-bottom: 15px;
        }

        .network-text p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .network-cities {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 15px;
        }

        .city-card {
            background-color: var(--bg-main);
            border: 1px solid var(--border-color);
            padding: 15px;
            border-radius: 6px;
            text-align: center;
        }

        .city-name {
            font-weight: 700;
            color: var(--text-main);
            font-size: 14px;
        }

        .city-desc {
            font-size: 11px;
            color: var(--text-muted);
        }

        .network-map-placeholder {
            background: linear-gradient(135deg, #FFEFE5 0%, #FFF7F2 100%);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            height: 300px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            text-align: center;
            padding: 20px;
        }

        .network-map-placeholder p {
            font-size: 16px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .network-map-placeholder span {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 7. 标准化服务全流程 & 8. 技术标准 */
        .dual-column-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .standard-list, .tech-list {
            list-style: none;
        }

        .standard-list li, .tech-list li {
            position: relative;
            padding-left: 24px;
            margin-bottom: 15px;
            font-size: 14px;
            color: var(--text-muted);
        }

        .standard-list li::before, .tech-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            top: 0;
            color: var(--primary);
            font-weight: bold;
        }

        .dual-column-grid h4 {
            font-size: 20px;
            color: var(--text-main);
            margin-bottom: 20px;
            border-left: 4px solid var(--primary);
            padding-left: 10px;
        }

        /* 9. 客户案例中心 */
        .case-gallery {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-bottom: 40px;
        }

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

        .case-item:hover {
            box-shadow: var(--shadow-hover);
            border-color: var(--primary);
        }

        .case-img-box {
            position: relative;
            background-color: #EEE;
            aspect-ratio: 16/10;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .case-info {
            padding: 20px;
        }

        .case-info h4 {
            font-size: 16px;
            margin-bottom: 8px;
            color: var(--text-main);
        }

        .case-info p {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* 10. 对比评测 */
        .eval-container {
            background-color: var(--bg-main);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 40px;
        }

        .eval-summary {
            display: flex;
            justify-content: space-around;
            align-items: center;
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 30px;
            margin-bottom: 30px;
            text-align: center;
        }

        .eval-score-box {
            flex: 1;
        }

        .eval-score-num {
            font-size: 64px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
        }

        .eval-stars {
            color: var(--accent);
            font-size: 24px;
            margin-top: 5px;
        }

        .eval-recommend {
            font-weight: 700;
            font-size: 18px;
            margin-top: 5px;
        }

        .eval-desc-box {
            flex: 2;
            padding-left: 40px;
            text-align: left;
            border-left: 1px solid var(--border-color);
        }

        .eval-desc-box h4 {
            font-size: 20px;
            margin-bottom: 10px;
        }

        .eval-desc-box p {
            font-size: 14px;
            color: var(--text-muted);
        }

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

        .eval-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            background-color: var(--bg-card);
            border-radius: 8px;
            overflow: hidden;
            font-size: 14px;
        }

        .eval-table th, .eval-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-color);
        }

        .eval-table th {
            background-color: #FFF2EB;
            color: var(--text-main);
            font-weight: 700;
        }

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

        .highlight-col {
            background-color: rgba(255, 85, 0, 0.03);
            font-weight: 600;
            color: var(--primary);
        }

        /* 11. 智能需求匹配 */
        .matcher-box {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 45px;
            max-width: 800px;
            margin: 0 auto;
            box-shadow: var(--shadow-soft);
        }

        .matcher-steps {
            display: flex;
            justify-content: space-between;
            margin-bottom: 30px;
            position: relative;
        }

        .matcher-steps::before {
            content: '';
            position: absolute;
            top: 15px;
            left: 0;
            right: 0;
            height: 2px;
            background-color: var(--border-color);
            z-index: 1;
        }

        .matcher-step {
            position: relative;
            z-index: 2;
            background-color: var(--bg-card);
            padding: 0 10px;
            text-align: center;
            font-size: 12px;
            color: var(--text-muted);
        }

        .matcher-step-num {
            width: 32px;
            height: 32px;
            background-color: var(--bg-main);
            border: 2px solid var(--border-color);
            color: var(--text-muted);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            margin: 0 auto 8px auto;
        }

        .matcher-step.active .matcher-step-num {
            background-color: var(--primary);
            border-color: var(--primary);
            color: var(--text-light);
        }

        .matcher-step.active {
            color: var(--primary);
            font-weight: 600;
        }

        .matcher-content-panel {
            min-height: 180px;
            margin-bottom: 30px;
        }

        .matcher-options {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 15px;
        }

        .matcher-opt {
            border: 1px solid var(--border-color);
            border-radius: 6px;
            padding: 20px;
            text-align: center;
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .matcher-opt:hover, .matcher-opt.selected {
            border-color: var(--primary);
            background-color: rgba(255, 85, 0, 0.02);
            color: var(--primary);
        }

        .matcher-footer {
            display: flex;
            justify-content: space-between;
        }

        /* 12. Token比价参考 */
        .token-header-info {
            background-color: #FFF2EB;
            border-left: 4px solid var(--primary);
            padding: 15px 20px;
            border-radius: 0 8px 8px 0;
            margin-bottom: 30px;
            font-size: 14px;
        }

        /* 13. 职业技术培训 & 14. 人工智能培训 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
            margin-top: 30px;
        }

        .train-card {
            background-color: var(--bg-main);
            border: 1px solid var(--border-color);
            padding: 25px 20px;
            border-radius: 8px;
            text-align: center;
            transition: all 0.3s ease;
        }

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

        .train-cert {
            display: inline-block;
            font-size: 11px;
            background-color: rgba(255, 85, 0, 0.1);
            color: var(--primary);
            padding: 3px 8px;
            border-radius: 4px;
            margin-bottom: 12px;
            font-weight: 600;
        }

        .train-card h4 {
            font-size: 16px;
            color: var(--text-main);
            margin-bottom: 10px;
        }

        .train-card p {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 15. 帮助中心 & 16. 常见用户问题 FAQ */
        .faq-layout {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 6px;
            margin-bottom: 15px;
            overflow: hidden;
            transition: all 0.2s ease;
        }

        .faq-q {
            padding: 20px 24px;
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

        .faq-q::after {
            content: '+';
            font-size: 18px;
            color: var(--primary);
            transition: transform 0.2s ease;
        }

        .faq-item.open .faq-q::after {
            content: '-';
            transform: rotate(180deg);
        }

        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            background-color: #FAF8F6;
        }

        .faq-a-inner {
            padding: 20px 24px;
            font-size: 14px;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
            line-height: 1.6;
        }

        /* 17. 常见问题自助排查 */
        .troubleshoot-box {
            background-color: var(--bg-main);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 30px;
            margin-top: 40px;
        }

        .troubleshoot-box h4 {
            font-size: 18px;
            margin-bottom: 15px;
        }

        .troubleshoot-steps {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .ts-step {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 20px;
            border-radius: 6px;
        }

        .ts-step h5 {
            font-size: 14px;
            margin-bottom: 8px;
            color: var(--primary);
        }

        .ts-step p {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 18. 网站术语百科 */
        .glossary-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
            margin-top: 30px;
        }

        .glossary-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 20px;
            border-radius: 6px;
        }

        .glossary-card h4 {
            font-size: 15px;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .glossary-card p {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 19. 行业资讯 / 知识库 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .news-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

        .news-card-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .news-card-body h4 {
            font-size: 15px;
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .news-link {
            font-size: 13px;
            color: var(--primary);
            font-weight: 600;
            margin-top: 15px;
            display: inline-block;
        }

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

        /* 客户评论卡片 */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
            margin-top: 40px;
        }

        .comment-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 30px;
            border-radius: 8px;
            position: relative;
        }

        .comment-quote {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
            font-style: italic;
        }

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

        .user-avatar {
            width: 40px;
            height: 40px;
            background-color: var(--bg-main);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--primary);
            border: 1px solid var(--border-color);
        }

        .user-info h5 {
            font-size: 14px;
            color: var(--text-main);
        }

        .user-info p {
            font-size: 11px;
            color: var(--text-muted);
        }

        /* 20. 联系我们 & 表单 */
        .contact-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
        }

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

        .contact-methods {
            list-style: none;
            margin-bottom: 30px;
        }

        .contact-methods li {
            margin-bottom: 15px;
            font-size: 15px;
        }

        .contact-label {
            font-weight: 700;
            color: var(--text-main);
            display: inline-block;
            width: 100px;
        }

        .qr-area {
            display: flex;
            gap: 30px;
            background-color: var(--bg-main);
            padding: 20px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
        }

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

        .qr-card img {
            width: 100px;
            height: 100px;
            border: 1px solid var(--border-color);
            margin-bottom: 10px;
            background-color: #fff;
        }

        .qr-card p {
            font-size: 12px;
            font-weight: 600;
        }

        .form-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 40px;
            box-shadow: var(--shadow-soft);
        }

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

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-size: 14px;
            background-color: var(--bg-main);
            transition: all 0.2s ease;
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            background-color: var(--bg-card);
        }

        select.form-control {
            appearance: none;
            background-image: url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236E6661' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 16px center;
            background-size: 16px;
        }

        .btn-submit {
            width: 100%;
            background-color: var(--primary);
            color: var(--text-light);
            border: none;
            padding: 14px;
            border-radius: 6px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: background-color 0.2s;
        }

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

        /* 友情链接 */
        .friendship-links {
            padding: 30px 0;
            background-color: var(--bg-card);
            border-bottom: 1px solid var(--border-color);
            text-align: center;
        }

        .friendship-title {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-muted);
            margin-bottom: 15px;
        }

        .friend-links-list {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 20px;
        }

        .friend-links-list a {
            font-size: 13px;
            color: var(--text-muted);
        }

        .friend-links-list a:hover {
            color: var(--primary);
        }

        /* 页脚 */
        footer {
            background-color: #1E1C1B;
            color: #A59E9A;
            padding: 60px 0 30px 0;
            font-size: 13px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
            border-bottom: 1px solid #332F2D;
            padding-bottom: 40px;
        }

        .footer-brand h4 {
            color: var(--text-light);
            font-size: 18px;
            margin-bottom: 15px;
        }

        .footer-brand p {
            line-height: 1.8;
            margin-bottom: 15px;
        }

        .footer-col h5 {
            color: var(--text-light);
            font-size: 14px;
            margin-bottom: 15px;
        }

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

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

        .footer-col ul li a {
            color: #A59E9A;
        }

        .footer-col ul li a:hover {
            color: var(--primary);
        }

        .copyright-area {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
        }

        .copyright-area p {
            color: #6E6661;
        }

        .ai-page-home-link {
            color: var(--primary);
            font-weight: 600;
        }

        /* 侧边浮动工具栏 */
        .floating-tool {
            position: fixed;
            right: 20px;
            bottom: 40px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            z-index: 999;
        }

        .tool-item {
            width: 48px;
            height: 48px;
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 4px 15px rgba(0,0,0,0.05);
            transition: all 0.3s ease;
            position: relative;
        }

        .tool-item:hover {
            background-color: var(--primary);
            color: var(--text-light);
            border-color: var(--primary);
        }

        .tool-item-pop {
            position: absolute;
            right: 60px;
            bottom: 0;
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 15px;
            border-radius: 8px;
            box-shadow: var(--shadow-hover);
            display: none;
            text-align: center;
            min-width: 140px;
        }

        .tool-item-pop img {
            width: 100px;
            height: 100px;
            margin: 0 auto 5px auto;
        }

        .tool-item-pop p {
            font-size: 11px;
            color: var(--text-main);
            font-weight: 600;
        }

        .tool-item:hover .tool-item-pop {
            display: block;
        }

        /* 响应式调整 */
        @media (max-width: 992px) {
            .about-grid, .network-grid, .dual-column-grid, .contact-layout {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .solutions-grid, .case-gallery, .comments-grid, .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .eval-summary {
                flex-direction: column;
                gap: 20px;
            }
            .eval-desc-box {
                padding-left: 0;
                border-left: none;
                text-align: center;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: var(--bg-card);
                border-bottom: 1px solid var(--border-color);
                padding: 20px;
                gap: 15px;
            }
            .nav-links.active {
                display: flex;
            }
            .menu-toggle {
                display: block;
            }
            .hero h1 {
                font-size: 28px;
            }
            .hero p {
                font-size: 15px;
            }
            .hero-btns {
                flex-direction: column;
                align-items: center;
            }
            .btn-main, .btn-sub {
                width: 100%;
                max-width: 300px;
            }
            .solutions-grid, .case-gallery, .comments-grid, .news-grid, .stats-grid, .ts-step {
                grid-template-columns: 1fr;
            }
            .troubleshoot-steps {
                grid-template-columns: 1fr;
            }
            .matcher-options {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }