:root {
            --primary-color: #E60023; /* 艳红热烈主色 */
            --primary-hover: #C0001A;
            --secondary-color: #FF4D6D;
            --accent-color: #FFB800; /* 五星好评金黄 */
            --text-main: #1F2937;
            --text-muted: #6B7280;
            --bg-light: #F9FAFB;
            --bg-white: #FFFFFF;
            --border-color: rgba(230, 0, 35, 0.08);
            --shadow-sm: 0 2px 8px rgba(230, 0, 35, 0.04);
            --shadow-md: 0 8px 30px rgba(230, 0, 35, 0.06);
            --shadow-lg: 0 12px 40px rgba(230, 0, 35, 0.1);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
        }

        /* 重置基础样式 */
        * {
            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;
            color: var(--text-main);
            background-color: var(--bg-light);
            line-height: 1.6;
        }

        body {
            overflow-x: hidden;
        }

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

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

        /* 统一外层居中容器 */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 通用区块样式 */
        section {
            padding: 96px 0;
            border-bottom: 1px solid rgba(0, 0, 0, 0.03);
            position: relative;
        }

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

        .section-header h2 {
            font-size: 2.25rem;
            color: #111827;
            font-weight: 800;
            position: relative;
            display: inline-block;
            margin-bottom: 16px;
        }

        .section-header h2::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
            border-radius: 2px;
        }

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

        /* 按钮基础样式 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 32px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: 99px;
            transition: var(--transition);
            cursor: pointer;
            border: none;
            outline: none;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: var(--bg-white);
            box-shadow: 0 4px 15px rgba(230, 0, 35, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(230, 0, 35, 0.4);
            background: linear-gradient(135deg, var(--primary-hover), var(--primary-color));
        }

        .btn-secondary {
            background-color: var(--bg-white);
            color: var(--primary-color);
            border: 2px solid var(--primary-color);
        }

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

        /* 顶部导航 */
        header {
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(8px);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 80px;
        }

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

        .ai-page-logo {
            max-height: 48px;
            width: auto;
        }

        .logo-text {
            font-size: 1.5rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 20px;
            list-style: none;
        }

        .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-main);
            padding: 8px 12px;
            border-radius: 6px;
        }

        .nav-link:hover {
            color: var(--primary-color);
            background-color: rgba(230, 0, 35, 0.05);
        }

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

        /* 汉堡菜单仅移动端展示 */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 6px;
            cursor: pointer;
            border: none;
            background: none;
            padding: 4px;
        }

        .menu-toggle span {
            display: block;
            width: 24px;
            height: 3px;
            background-color: var(--primary-color);
            border-radius: 2px;
            transition: var(--transition);
        }

        /* 1. 首页 (Hero首屏) - 首屏不含任何图片 */
        #home {
            padding: 180px 0 100px 0;
            background: radial-gradient(circle at 80% 20%, rgba(255, 77, 109, 0.08) 0%, transparent 50%),
                        radial-gradient(circle at 10% 80%, rgba(230, 0, 35, 0.05) 0%, transparent 50%),
                        var(--bg-white);
            text-align: center;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background-color: rgba(230, 0, 35, 0.06);
            color: var(--primary-color);
            padding: 8px 20px;
            border-radius: 99px;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 24px;
            border: 1px solid rgba(230, 0, 35, 0.15);
        }

        .hero-title-box h1 {
            font-size: 3.5rem;
            font-weight: 850;
            line-height: 1.2;
            color: #111827;
            margin-bottom: 24px;
            letter-spacing: -1px;
        }

        .hero-title-box h1 span {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

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

        .hero-buttons {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 60px;
        }

        .hero-highlights {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            max-width: 1000px;
            margin: 0 auto;
        }

        .highlight-item {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            padding: 24px;
            border-radius: 16px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .highlight-item:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary-color);
        }

        .highlight-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary-color);
            margin-bottom: 8px;
        }

        .highlight-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* 2. 关于我们 */
        #about {
            background-color: var(--bg-light);
        }

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

        .about-content h3 {
            font-size: 1.75rem;
            color: #111827;
            margin-bottom: 20px;
            font-weight: 700;
        }

        .about-content p {
            color: var(--text-muted);
            margin-bottom: 20px;
            font-size: 1.05rem;
            line-height: 1.8;
        }

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

        .about-feat-item {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 600;
            color: var(--text-main);
        }

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

        .about-visual {
            position: relative;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        /* 3. 全平台AIGC服务 */
        #services {
            background-color: var(--bg-white);
        }

        .platform-cloud {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
            max-width: 900px;
            margin: 40px auto 0 auto;
        }

        .platform-tag {
            background-color: var(--bg-light);
            border: 1px solid rgba(0, 0, 0, 0.05);
            padding: 8px 16px;
            border-radius: 99px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-main);
            transition: var(--transition);
        }

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

        /* 4. 一站式AIGC制作 */
        #creation {
            background-color: var(--bg-light);
        }

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

        .creation-card {
            background-color: var(--bg-white);
            border-radius: 20px;
            padding: 40px 30px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .creation-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-color);
        }

        .creation-icon {
            width: 60px;
            height: 60px;
            border-radius: 16px;
            background-color: rgba(230, 0, 35, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-color);
            margin-bottom: 24px;
        }

        .creation-card h3 {
            font-size: 1.35rem;
            font-weight: 700;
            margin-bottom: 14px;
            color: #111827;
        }

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

        .creation-features {
            list-style: none;
            padding-top: 20px;
            border-top: 1px dashed var(--border-color);
        }

        .creation-features li {
            font-size: 0.9rem;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 10px;
        }

        .creation-features li::before {
            content: "✦";
            color: var(--primary-color);
        }

        /* 5. 全行业解决方案 */
        #solutions {
            background-color: var(--bg-white);
        }

        .solution-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .solution-list {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .solution-item {
            display: flex;
            gap: 20px;
            background-color: var(--bg-light);
            padding: 24px;
            border-radius: 16px;
            border-left: 4px solid var(--primary-color);
            transition: var(--transition);
        }

        .solution-item:hover {
            transform: translateX(5px);
            background-color: var(--bg-white);
            box-shadow: var(--shadow-md);
        }

        .solution-num {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary-color);
        }

        .solution-detail h4 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: #111827;
        }

        .solution-detail p {
            font-size: 0.92rem;
            color: var(--text-muted);
        }

        /* 6. 全国服务网络 */
        #network {
            background-color: var(--bg-light);
        }

        .network-wrapper {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 50px;
            align-items: center;
        }

        .network-info h3 {
            font-size: 1.75rem;
            color: #111827;
            margin-bottom: 20px;
            font-weight: 700;
        }

        .network-info p {
            color: var(--text-muted);
            margin-bottom: 30px;
            font-size: 1.05rem;
        }

        .network-cities {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }

        .city-card {
            background-color: var(--bg-white);
            padding: 16px;
            border-radius: 12px;
            text-align: center;
            border: 1px solid var(--border-color);
            font-weight: 600;
            font-size: 0.95rem;
        }

        .network-map {
            background: linear-gradient(135deg, rgba(230, 0, 35, 0.05), rgba(255, 77, 109, 0.05));
            border-radius: 20px;
            padding: 40px;
            border: 1px solid var(--border-color);
            text-align: center;
        }

        .map-icon {
            font-size: 4rem;
            margin-bottom: 16px;
        }

        /* 7. 标准化AIGC流程 */
        #workflow {
            background-color: var(--bg-white);
        }

        .steps-container {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            position: relative;
        }

        .steps-container::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 50px;
            right: 50px;
            height: 2px;
            background: dashed rgba(230, 0, 35, 0.15);
            z-index: 1;
        }

        .step-item {
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .step-num {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background-color: var(--bg-white);
            border: 4px solid var(--primary-color);
            color: var(--primary-color);
            font-size: 1.5rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 24px auto;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .step-item:hover .step-num {
            background-color: var(--primary-color);
            color: var(--bg-white);
            transform: scale(1.1);
        }

        .step-item h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: #111827;
        }

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

        /* 8. 技术标准 */
        #standards {
            background-color: var(--bg-light);
        }

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

        .standard-card {
            background-color: var(--bg-white);
            border-radius: 16px;
            padding: 32px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

        .standard-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: #111827;
            border-left: 4px solid var(--primary-color);
            padding-left: 12px;
        }

        .standard-card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 9. 客户案例中心 */
        #cases {
            background-color: var(--bg-white);
        }

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

        .case-card {
            background-color: var(--bg-light);
            border-radius: 20px;
            overflow: hidden;
            border: 1px solid rgba(0,0,0,0.04);
            transition: var(--transition);
        }

        .case-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-color);
        }

        .case-img-box {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background-color: #eee;
        }

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

        .case-info {
            padding: 24px;
        }

        .case-tag {
            display: inline-block;
            background-color: rgba(230, 0, 35, 0.08);
            color: var(--primary-color);
            font-size: 0.8rem;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 4px;
            margin-bottom: 12px;
        }

        .case-info h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: #111827;
        }

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

        /* 10. 对比评测 - 9.9分五星 */
        #comparison {
            background-color: var(--bg-light);
        }

        .review-banner {
            background: linear-gradient(135deg, #111827, #1f2937);
            border-radius: 24px;
            padding: 48px;
            color: var(--bg-white);
            display: grid;
            grid-template-columns: 1fr 1.5fr;
            gap: 40px;
            align-items: center;
            margin-bottom: 50px;
            box-shadow: var(--shadow-lg);
        }

        .rating-box {
            text-align: center;
            border-right: 1px solid rgba(255,255,255,0.1);
            padding-right: 40px;
        }

        .rating-num {
            font-size: 5rem;
            font-weight: 900;
            color: var(--primary-color);
            line-height: 1;
        }

        .rating-stars {
            color: var(--accent-color);
            font-size: 1.8rem;
            margin: 16px 0;
        }

        .rating-label {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.7);
            font-weight: 600;
        }

        .review-desc h3 {
            font-size: 1.75rem;
            margin-bottom: 16px;
            color: var(--bg-white);
        }

        .review-desc p {
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.8;
        }

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

        table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 800px;
        }

        th, td {
            padding: 18px 24px;
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            font-size: 0.95rem;
        }

        th {
            background-color: rgba(230, 0, 35, 0.03);
            color: #111827;
            font-weight: 700;
        }

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

        .table-highlight {
            background-color: rgba(230, 0, 35, 0.01);
            font-weight: 600;
        }

        /* 11. 智能需求匹配 - 表单 */
        #match {
            background-color: var(--bg-white);
        }

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

        .match-info h3 {
            font-size: 1.75rem;
            font-weight: 700;
            color: #111827;
            margin-bottom: 20px;
        }

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

        .match-benefits {
            list-style: none;
        }

        .match-benefits li {
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 600;
        }

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

        .form-box {
            background-color: var(--bg-light);
            border-radius: 24px;
            padding: 40px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 20px;
        }

        .form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .form-group-full {
            grid-column: span 2;
        }

        .form-label {
            font-size: 0.9rem;
            font-weight: 600;
            color: #374151;
        }

        .form-control {
            padding: 12px 16px;
            border-radius: 8px;
            border: 1px solid rgba(0,0,0,0.15);
            background-color: var(--bg-white);
            font-size: 0.95rem;
            outline: none;
            transition: var(--transition);
        }

        .form-control:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(230, 0, 35, 0.1);
        }

        /* 12. Token比价参考 */
        #pricing {
            background-color: var(--bg-light);
        }

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

        .pricing-card {
            background-color: var(--bg-white);
            border-radius: 20px;
            padding: 40px 30px;
            border: 1px solid var(--border-color);
            text-align: center;
            position: relative;
            overflow: hidden;
            transition: var(--transition);
        }

        .pricing-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-color);
        }

        .pricing-card.popular::before {
            content: "推荐特惠";
            position: absolute;
            top: 20px;
            right: -35px;
            background-color: var(--primary-color);
            color: var(--bg-white);
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 35px;
            transform: rotate(45deg);
        }

        .price-title {
            font-size: 1.35rem;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .price-num {
            font-size: 2.25rem;
            font-weight: 800;
            color: var(--primary-color);
            margin: 20px 0;
        }

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

        .price-list {
            list-style: none;
            margin-bottom: 30px;
            text-align: left;
        }

        .price-list li {
            padding: 10px 0;
            border-bottom: 1px solid rgba(0, 0, 0, 0.04);
            font-size: 0.9rem;
            color: var(--text-muted);
            display: flex;
            justify-content: space-between;
        }

        .price-list li span:last-child {
            font-weight: 700;
            color: var(--text-main);
        }

        /* 13. 职业技术培训 / 14. 人工智能培训 */
        #training {
            background-color: var(--bg-white);
        }

        .training-intro {
            background-color: rgba(230, 0, 35, 0.02);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 30px;
            margin-bottom: 40px;
            text-align: center;
        }

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

        .training-card {
            background-color: var(--bg-light);
            border-radius: 16px;
            padding: 32px;
            border: 1px solid rgba(0, 0, 0, 0.04);
            transition: var(--transition);
        }

        .training-card:hover {
            transform: translateY(-5px);
            background-color: var(--bg-white);
            border-color: var(--primary-color);
            box-shadow: var(--shadow-md);
        }

        .training-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: #111827;
        }

        .training-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .training-badge {
            display: inline-block;
            background-color: var(--primary-color);
            color: var(--bg-white);
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 4px;
            margin-bottom: 16px;
        }

        /* 15. 帮助中心 / 17. 常见问题自助排查 / 18. 网站术语百科 */
        #support {
            background-color: var(--bg-light);
        }

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

        .support-box {
            background-color: var(--bg-white);
            border-radius: 20px;
            padding: 35px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }

        .support-box h3 {
            font-size: 1.35rem;
            font-weight: 700;
            margin-bottom: 20px;
            color: #111827;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .support-box h3::before {
            content: "";
            display: inline-block;
            width: 4px;
            height: 18px;
            background-color: var(--primary-color);
            border-radius: 2px;
        }

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

        .support-list li {
            padding: 12px 0;
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
        }

        .support-list li:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .support-list h4 {
            font-size: 1rem;
            font-weight: 600;
            color: #111827;
            margin-bottom: 6px;
        }

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

        /* 16. 常见用户问题 FAQ */
        #faq {
            background-color: var(--bg-white);
        }

        .faq-list {
            max-width: 900px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background-color: var(--bg-light);
            border: 1px solid rgba(0, 0, 0, 0.04);
            border-radius: 12px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-header {
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            user-select: none;
        }

        .faq-header h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: #111827;
        }

        .faq-icon {
            font-size: 1.2rem;
            color: var(--primary-color);
            transition: var(--transition);
        }

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

        .faq-content {
            padding: 20px 24px;
            font-size: 0.95rem;
            color: var(--text-muted);
            border-top: 1px solid rgba(0, 0, 0, 0.03);
            line-height: 1.7;
        }

        .faq-item.active .faq-body {
            max-height: 200px; /* 足够容纳大部分回答 */
        }

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

        /* 用户评论 */
        #testimonials {
            background-color: var(--bg-light);
        }

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

        .testimonial-card {
            background-color: var(--bg-white);
            border-radius: 20px;
            padding: 30px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .testi-content {
            font-style: italic;
            color: var(--text-main);
            margin-bottom: 24px;
            font-size: 0.95rem;
        }

        .testi-meta {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .testi-avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background-color: rgba(230, 0, 35, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--primary-color);
        }

        .testi-info h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #111827;
        }

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

        /* 19. 行业资讯 / 知识库 */
        #news {
            background-color: var(--bg-white);
        }

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

        .news-card {
            background-color: var(--bg-light);
            border-radius: 16px;
            padding: 24px;
            border: 1px solid rgba(0, 0, 0, 0.04);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            transition: var(--transition);
        }

        .news-card:hover {
            transform: translateY(-5px);
            background-color: var(--bg-white);
            border-color: var(--primary-color);
            box-shadow: var(--shadow-md);
        }

        .news-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 12px;
            line-height: 1.5;
        }

        .news-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .news-link {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--primary-color);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* 20. 联系我们 */
        #contact {
            background-color: var(--bg-light);
        }

        .contact-wrapper {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 60px;
            align-items: center;
        }

        .contact-details {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

        .contact-card {
            background-color: var(--bg-white);
            padding: 24px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

        .contact-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: #111827;
        }

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

        .contact-media {
            background-color: var(--bg-white);
            padding: 40px;
            border-radius: 24px;
            border: 1px solid var(--border-color);
            text-align: center;
            box-shadow: var(--shadow-sm);
        }

        .qr-box {
            width: 160px;
            height: 160px;
            margin: 0 auto 20px auto;
            border: 1px solid rgba(0,0,0,0.08);
            border-radius: 12px;
            padding: 8px;
            background-color: var(--bg-white);
        }

        .qr-box img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .contact-media h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 4px;
        }

        .contact-media p {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* 页脚 */
        footer {
            background-color: #111827;
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 30px 0;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr repeat(3, 1fr);
            gap: 40px;
            margin-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            padding-bottom: 40px;
        }

        .footer-brand h4 {
            font-size: 1.25rem;
            color: var(--bg-white);
            margin-bottom: 16px;
            font-weight: 700;
        }

        .footer-brand p {
            font-size: 0.85rem;
            line-height: 1.7;
        }

        .footer-links h4 {
            font-size: 1rem;
            color: var(--bg-white);
            margin-bottom: 16px;
            font-weight: 700;
        }

        .footer-links ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

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

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }

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

        .friendly-links a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.8rem;
        }

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

        /* 浮动工具栏 */
        .float-toolbar {
            position: fixed;
            bottom: 40px;
            right: 30px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            z-index: 999;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: var(--bg-white);
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
            border: 1px solid rgba(0,0,0,0.05);
            position: relative;
        }

        .float-btn:hover {
            background-color: var(--primary-color);
            color: var(--bg-white);
            transform: scale(1.05);
        }

        .float-btn-qr {
            position: absolute;
            bottom: 60px;
            right: 0;
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            padding: 12px;
            border-radius: 12px;
            box-shadow: var(--shadow-lg);
            display: none;
            width: 140px;
        }

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

        /* 响应式适配 */
        @media (max-width: 1024px) {
            .hero-title-box h1 {
                font-size: 2.75rem;
            }
            .hero-highlights {
                grid-template-columns: repeat(2, 1fr);
            }
            .about-grid, .solution-grid, .network-wrapper, .match-container, .contact-wrapper {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .creation-grid, .standard-grid, .cases-grid, .pricing-cards, .training-grid, .testimonials-grid, .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .review-banner {
                grid-template-columns: 1fr;
            }
            .rating-box {
                border-right: none;
                border-bottom: 1px solid rgba(255,255,255,0.1);
                padding-right: 0;
                padding-bottom: 30px;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                position: absolute;
                top: 80px;
                left: 0;
                right: 0;
                background-color: var(--bg-white);
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow-md);
            }
            .nav-menu.active {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
            .hero-title-box h1 {
                font-size: 2.25rem;
            }
            .hero-buttons {
                flex-direction: column;
                gap: 12px;
            }
            .creation-grid, .standard-grid, .cases-grid, .pricing-cards, .training-grid, .testimonials-grid, .news-grid, .support-grid {
                grid-template-columns: 1fr;
            }
            .steps-container {
                grid-template-columns: 1fr;
            }
            .steps-container::before {
                display: none;
            }
            .form-grid {
                grid-template-columns: 1fr;
            }
            .form-group-full {
                grid-column: span 1;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .network-cities {
                grid-template-columns: repeat(2, 1fr);
            }
        }