:root {
            --primary: #5F27CD;
            --primary-light: #FF6B6B;
            --accent-orange: #FF9F43;
            --accent-yellow: #FECA57;
            --accent-green: #1DD1A1;
            --accent-cyan: #00D2D3;
            --accent-blue: #54A0FF;
            --dark: #1A1D2C;
            --light-bg: #FAF9F6;
            --white: #FFFFFF;
            --text-muted: #64748B;
            --border-color: #E2E8F0;
            --rainbow-gradient: linear-gradient(90deg, #FF6B6B, #FF9F43, #FECA57, #1DD1A1, #00D2D3, #54A0FF, #5F27CD);
            --rainbow-bg: linear-gradient(135deg, rgba(255,107,107,0.05), rgba(0,210,211,0.05), rgba(95,39,205,0.05));
        }

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

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

        body {
            overflow-x: hidden;
            background: var(--rainbow-bg);
        }

        /* 统一容器 */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        section {
            padding: 80px 0;
            position: relative;
        }

        /* 标题规范 */
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-header h2 {
            font-size: 2.2rem;
            color: var(--dark);
            margin-bottom: 16px;
            font-weight: 800;
            letter-spacing: -0.5px;
            position: relative;
            display: inline-block;
        }

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

        .section-header p {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 600px;
            margin: 12px auto 0;
        }

        /* 渐变文本 */
        .gradient-text {
            background: var(--rainbow-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            font-weight: 800;
        }

        /* 导航栏 */
        header {
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: all 0.3s ease;
        }

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

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

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

        .logo-text {
            font-size: 1.3rem;
            font-weight: 800;
            letter-spacing: 0.5px;
        }

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

        .nav-links a {
            text-decoration: none;
            color: var(--dark);
            font-size: 0.95rem;
            font-weight: 500;
            transition: color 0.2s ease;
        }

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

        .nav-links .ai-page-home-link {
            font-weight: 700;
            color: var(--primary);
        }

        .nav-btn {
            background: var(--rainbow-gradient);
            color: var(--white) !important;
            padding: 8px 18px;
            border-radius: 30px;
            font-weight: 600;
            transition: transform 0.2s ease, box-shadow 0.2s ease;
            box-shadow: 0 4px 15px rgba(95, 39, 205, 0.2);
        }

        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(95, 39, 205, 0.3);
        }

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

        /* 移动端侧栏 */
        .mobile-sidebar {
            position: fixed;
            top: 0;
            right: -280px;
            width: 280px;
            height: 100vh;
            background: var(--white);
            box-shadow: -5px 0 25px rgba(0,0,0,0.1);
            z-index: 1001;
            padding: 30px 24px;
            display: flex;
            flex-direction: column;
            gap: 20px;
            transition: right 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .mobile-sidebar.active {
            right: 0;
        }

        .mobile-sidebar-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100vw;
            height: 100vh;
            background: rgba(0,0,0,0.5);
            z-index: 1000;
            display: none;
        }

        .mobile-sidebar-overlay.active {
            display: block;
        }

        .mobile-sidebar a {
            text-decoration: none;
            color: var(--dark);
            font-size: 1.1rem;
            font-weight: 500;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-color);
        }

        .mobile-sidebar .close-btn {
            align-self: flex-end;
            font-size: 1.5rem;
            background: none;
            border: none;
            cursor: pointer;
            margin-bottom: 20px;
        }

        /* Hero首屏 - 彩虹多彩风格且无图片 */
        .hero {
            padding: 120px 0 100px 0;
            text-align: center;
            background: radial-gradient(circle at top, rgba(255, 255, 255, 0.8) 0%, rgba(240, 244, 255, 0.4) 100%);
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -20%;
            left: 50%;
            transform: translateX(-50%);
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(95, 39, 205, 0.1) 0%, rgba(255, 107, 107, 0.05) 50%, rgba(255,255,255,0) 70%);
            z-index: 0;
            pointer-events: none;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(95, 39, 205, 0.08);
            border: 1px solid rgba(95, 39, 205, 0.2);
            color: var(--primary);
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 24px;
            position: relative;
            z-index: 1;
        }

        .hero h1 {
            font-size: 3.2rem;
            line-height: 1.25;
            font-weight: 900;
            margin-bottom: 24px;
            position: relative;
            z-index: 1;
            letter-spacing: -1px;
        }

        .hero-desc {
            font-size: 1.25rem;
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto 36px;
            position: relative;
            z-index: 1;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            position: relative;
            z-index: 1;
        }

        .btn {
            display: inline-block;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            text-decoration: none;
            transition: all 0.3s ease;
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background: var(--rainbow-gradient);
            color: var(--white);
            box-shadow: 0 4px 20px rgba(95, 39, 205, 0.25);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 30px rgba(95, 39, 205, 0.4);
        }

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

        .btn-secondary:hover {
            background: var(--light-bg);
            border-color: var(--text-muted);
            transform: translateY(-3px);
        }

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 50px;
            position: relative;
            z-index: 1;
        }

        .stat-card {
            background: var(--white);
            border-radius: 20px;
            padding: 24px;
            text-align: center;
            border: 1px solid var(--border-color);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            box-shadow: 0 10px 30px rgba(0,0,0,0.02);
            position: relative;
            overflow: hidden;
        }

        .stat-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: var(--rainbow-gradient);
        }

        .stat-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 40px rgba(0,0,0,0.08);
        }

        .stat-num {
            font-size: 2.5rem;
            font-weight: 800;
            margin-bottom: 8px;
            display: block;
        }

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

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

        .service-card {
            background: var(--white);
            border-radius: 24px;
            padding: 36px;
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
            position: relative;
            display: flex;
            flex-direction: column;
        }

        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(95, 39, 205, 0.08);
        }

        .service-card::after {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            border-radius: 24px;
            padding: 2px; 
            background: var(--rainbow-gradient); 
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude; 
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .service-card:hover::after {
            opacity: 1;
        }

        .service-icon {
            width: 60px;
            height: 60px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            margin-bottom: 24px;
            background: #F8FAFC;
        }

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

        .service-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
            margin-bottom: 20px;
            flex-grow: 1;
        }

        .service-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--primary);
        }

        /* 标签云组件 */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
            max-width: 900px;
            margin: 40px auto 0;
        }

        .tag-item {
            padding: 8px 16px;
            background: var(--white);
            border: 1px solid var(--border-color);
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--dark);
            transition: all 0.2s ease;
        }

        .tag-item:hover {
            border-color: var(--primary-light);
            background: var(--rainbow-bg);
            transform: scale(1.05);
        }

        /* 关于我们 & 解决方案双栏布局 */
        .info-layout {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 50px;
            align-items: center;
        }

        .info-content h3 {
            font-size: 1.8rem;
            margin-bottom: 18px;
            font-weight: 800;
        }

        .info-content p {
            font-size: 1.05rem;
            color: var(--text-muted);
            margin-bottom: 24px;
            line-height: 1.8;
        }

        .info-list {
            list-style: none;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .info-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 600;
            font-size: 0.95rem;
        }

        .info-list li::before {
            content: "✓";
            color: var(--accent-green);
            font-weight: 900;
            font-size: 1.1rem;
        }

        /* 标准化流程 & 时间线 */
        .timeline {
            position: relative;
            max-width: 1000px;
            margin: 50px auto 0;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            width: 4px;
            height: 100%;
            background: var(--border-color);
            top: 0;
        }

        .timeline-item {
            width: 50%;
            padding: 20px 40px;
            position: relative;
            box-sizing: border-box;
        }

        .timeline-item:nth-child(odd) {
            left: 0;
            text-align: right;
        }

        .timeline-item:nth-child(even) {
            left: 50%;
            text-align: left;
        }

        .timeline-item::after {
            content: '';
            position: absolute;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: var(--white);
            border: 4px solid var(--primary);
            top: 25px;
            z-index: 1;
        }

        .timeline-item:nth-child(odd)::after {
            right: -12px;
        }

        .timeline-item:nth-child(even)::after {
            left: -12px;
        }

        .timeline-card {
            background: var(--white);
            padding: 24px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 15px rgba(0,0,0,0.02);
            transition: all 0.3s ease;
        }

        .timeline-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.06);
        }

        .timeline-card h4 {
            font-size: 1.2rem;
            margin-bottom: 8px;
            color: var(--primary);
        }

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

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

        .case-card {
            background: var(--white);
            border-radius: 20px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
        }

        .case-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 35px rgba(0,0,0,0.08);
        }

        .case-img-container {
            width: 100%;
            position: relative;
            overflow: hidden;
            display: block;
        }

        .case-img-container img {
            width: 100%;
            height: auto;
            display: block;
            transition: transform 0.5s ease;
        }

        .case-card:hover .case-img-container img {
            transform: scale(1.05);
        }

        .case-body {
            padding: 24px;
        }

        .case-tag {
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--primary-light);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 8px;
            display: inline-block;
        }

        .case-title {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .case-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 15px;
        }

        /* 宣传展示图排版区 */
        .banner-gallery {
            display: flex;
            gap: 20px;
            justify-content: center;
            align-items: center;
            margin-top: 50px;
            flex-wrap: wrap;
        }

        .banner-gallery img {
            border-radius: 16px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.05);
            transition: all 0.3s ease;
            flex: 1 1 300px;
            max-width: 48%;
        }

        .banner-gallery img:hover {
            transform: scale(1.02);
            box-shadow: 0 15px 35px rgba(95,39,205,0.15);
        }

        /* 对比评测表格 */
        .compare-section {
            background: var(--white);
            border-radius: 30px;
            padding: 50px 40px;
            border: 1px solid var(--border-color);
            box-shadow: 0 15px 40px rgba(0,0,0,0.02);
        }

        .score-card {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 30px;
            background: var(--rainbow-bg);
            border-radius: 20px;
            padding: 30px;
            margin-bottom: 40px;
            border: 1px solid rgba(95,39,205,0.1);
        }

        .score-num {
            font-size: 4rem;
            font-weight: 900;
            color: var(--primary);
            line-height: 1;
        }

        .score-stars {
            font-size: 2rem;
            color: var(--accent-yellow);
        }

        .score-text {
            font-size: 1.1rem;
            font-weight: 700;
        }

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

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

        .compare-table th, .compare-table td {
            padding: 18px 24px;
            border-bottom: 1px solid var(--border-color);
        }

        .compare-table th {
            background-color: #F8FAFC;
            font-weight: 700;
            color: var(--dark);
        }

        .compare-table tr:hover {
            background-color: rgba(95, 39, 205, 0.02);
        }

        .compare-tag {
            display: inline-block;
            padding: 4px 10px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 700;
        }

        .compare-tag.yes {
            background-color: rgba(29, 209, 161, 0.15);
            color: #10ac84;
        }

        .compare-tag.no {
            background-color: rgba(255, 107, 107, 0.15);
            color: #ee5253;
        }

        /* 价格参考 / Token 比价 */
        .price-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .price-card {
            background: var(--white);
            border-radius: 24px;
            padding: 40px 30px;
            border: 1px solid var(--border-color);
            position: relative;
            text-align: center;
            transition: all 0.3s ease;
        }

        .price-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 35px rgba(0,0,0,0.06);
        }

        .price-card.featured {
            border-color: var(--primary);
            box-shadow: 0 10px 30px rgba(95, 39, 205, 0.1);
        }

        .price-card.featured::before {
            content: '最佳性价比';
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--rainbow-gradient);
            color: var(--white);
            padding: 4px 16px;
            font-size: 0.8rem;
            font-weight: 700;
            border-radius: 30px;
        }

        .price-header h3 {
            font-size: 1.4rem;
            margin-bottom: 12px;
        }

        .price-amount {
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--primary);
            margin-bottom: 20px;
        }

        .price-amount span {
            font-size: 1rem;
            color: var(--text-muted);
            font-weight: 400;
        }

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

        .price-features li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-color);
            font-size: 0.95rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .price-features li::before {
            content: '✓';
            color: var(--accent-green);
            font-weight: 800;
        }

        /* 培训中心 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
        }

        .training-card {
            background: var(--white);
            border-radius: 16px;
            padding: 24px 20px;
            text-align: center;
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
        }

        .training-card:hover {
            border-color: var(--primary);
            transform: scale(1.03);
            box-shadow: 0 10px 25px rgba(0,0,0,0.05);
        }

        .training-icon {
            font-size: 2rem;
            margin-bottom: 15px;
        }

        .training-card h4 {
            font-size: 1.05rem;
            margin-bottom: 10px;
            color: var(--dark);
        }

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

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

        .review-card {
            background: var(--white);
            border-radius: 20px;
            padding: 30px;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 20px rgba(0,0,0,0.01);
            transition: all 0.3s ease;
        }

        .review-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.05);
        }

        .review-stars {
            color: var(--accent-yellow);
            margin-bottom: 15px;
            font-size: 1.1rem;
        }

        .review-text {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 20px;
            font-style: italic;
        }

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

        .author-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--rainbow-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-weight: 700;
            font-size: 1.1rem;
        }

        .author-info h5 {
            font-size: 0.95rem;
            color: var(--dark);
        }

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

        /* 百科 / 知识库 / 自助排查 */
        .kb-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .kb-box {
            background: var(--white);
            border-radius: 20px;
            padding: 30px;
            border: 1px solid var(--border-color);
        }

        .kb-box h3 {
            font-size: 1.3rem;
            margin-bottom: 20px;
            border-bottom: 2px solid var(--border-color);
            padding-bottom: 10px;
            color: var(--primary);
        }

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

        .kb-list li {
            margin-bottom: 12px;
        }

        .kb-list a {
            text-decoration: none;
            color: var(--dark);
            font-size: 0.95rem;
            transition: color 0.2s ease;
            display: block;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .kb-list a:hover {
            color: var(--primary-light);
        }

        /* FAQ折叠面板 */
        .faq-list {
            max-width: 850px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--white);
            border-radius: 12px;
            margin-bottom: 16px;
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .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: 700;
            color: var(--dark);
        }

        .faq-icon {
            font-size: 1.2rem;
            font-weight: 300;
            transition: transform 0.3s ease;
        }

        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.8;
            border-top: 1px solid transparent;
        }

        .faq-item.active {
            border-color: var(--primary);
            box-shadow: 0 5px 20px rgba(95, 39, 205, 0.05);
        }

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

        .faq-item.active .faq-content {
            max-height: 300px;
            padding: 20px 24px;
            border-color: var(--border-color);
        }

        /* 智能需求匹配与表单 */
        .form-layout {
            display: grid;
            grid-template-columns: 0.9fr 1.1fr;
            gap: 50px;
            align-items: stretch;
        }

        .contact-info-card {
            background: var(--white);
            border-radius: 24px;
            padding: 40px;
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            box-shadow: 0 10px 30px rgba(0,0,0,0.01);
        }

        .contact-info-card h3 {
            font-size: 1.6rem;
            margin-bottom: 20px;
        }

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

        .contact-detail-list li {
            margin-bottom: 20px;
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 0.95rem;
        }

        .contact-detail-list li strong {
            color: var(--primary);
            min-width: 80px;
            display: inline-block;
        }

        .qr-codes {
            display: flex;
            gap: 20px;
            align-items: center;
        }

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

        .qr-item img {
            width: 100px;
            height: 100px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            margin-bottom: 8px;
        }

        .qr-item p {
            font-size: 0.8rem;
            color: var(--text-muted);
            font-weight: 700;
        }

        .form-card {
            background: var(--white);
            border-radius: 24px;
            padding: 40px;
            border: 1px solid var(--border-color);
            box-shadow: 0 10px 30px rgba(0,0,0,0.02);
        }

        .form-card h3 {
            font-size: 1.6rem;
            margin-bottom: 24px;
            font-weight: 800;
        }

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

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-size: 0.9rem;
            font-weight: 700;
        }

        .form-control {
            width: 100%;
            padding: 12px 18px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            background-color: #F8FAFC;
            font-size: 0.95rem;
            transition: all 0.3s ease;
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            background-color: var(--white);
            box-shadow: 0 0 0 3px rgba(95, 39, 205, 0.15);
        }

        textarea.form-control {
            resize: vertical;
            min-height: 100px;
        }

        /* 浮动客服入口 */
        .floating-action {
            position: fixed;
            bottom: 40px;
            right: 40px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .float-btn {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--white);
            box-shadow: 0 6px 20px rgba(0,0,0,0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            position: relative;
            transition: all 0.3s ease;
            text-decoration: none;
            color: var(--dark);
        }

        .float-btn:hover {
            transform: scale(1.1);
            color: var(--primary);
        }

        .float-btn.primary {
            background: var(--rainbow-gradient);
            color: var(--white);
        }

        .float-btn .tooltip {
            position: absolute;
            right: 70px;
            background: var(--white);
            color: var(--dark);
            padding: 6px 12px;
            border-radius: 6px;
            font-size: 0.85rem;
            font-weight: 700;
            white-space: nowrap;
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }

        .float-btn:hover .tooltip {
            opacity: 1;
            visibility: visible;
        }

        .float-qr-box {
            position: absolute;
            bottom: 70px;
            right: 0;
            background: var(--white);
            padding: 15px;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.15);
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            text-align: center;
            border: 1px solid var(--border-color);
        }

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

        .float-btn:hover .float-qr-box {
            opacity: 1;
            visibility: visible;
        }

        /* 页脚 */
        footer {
            background-color: var(--white);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px 0;
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr repeat(3, 1fr);
            gap: 40px;
            margin-bottom: 45px;
        }

        .footer-logo-desc p {
            margin-top: 15px;
            line-height: 1.7;
        }

        .footer-links-col h4 {
            color: var(--dark);
            margin-bottom: 20px;
            font-weight: 700;
        }

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

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

        .footer-links-col ul li a {
            text-decoration: none;
            color: var(--text-muted);
            transition: color 0.2s ease;
        }

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

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

        .friend-links {
            display: flex;
            gap: 15px;
            flex-wrap: wrap;
        }

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

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

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .services-grid, .cases-grid, .price-grid, .reviews-grid, .kb-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .training-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .info-layout, .form-layout {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero h1 {
                font-size: 2.6rem;
            }
            .banner-gallery img {
                max-width: 100%;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .mobile-menu-btn {
                display: block;
            }
            .hero h1 {
                font-size: 2.1rem;
            }
            .timeline::before {
                left: 20px;
            }
            .timeline-item {
                width: 100%;
                padding-left: 45px;
                padding-right: 0;
                text-align: left !important;
            }
            .timeline-item:nth-child(even) {
                left: 0;
            }
            .timeline-item::after {
                left: 10px !important;
                right: auto !important;
            }
            .services-grid, .cases-grid, .price-grid, .reviews-grid, .kb-grid, .training-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .score-card {
                flex-direction: column;
                text-align: center;
                gap: 15px;
            }
        }