:root {
            --primary: #7C3AED;
            --primary-light: #C084FC;
            --primary-dark: #5B21B6;
            --secondary: #EC4899;
            --accent: #8B5CF6;
            --bg-light: #F9FAFB;
            --bg-purple: #F5F3FF;
            --text-dark: #1F2937;
            --text-muted: #4B5563;
            --border-color: #E5E7EB;
            --card-shadow: 0 10px 25px -5px rgba(124, 58, 237, 0.05), 0 8px 10px -6px rgba(124, 58, 237, 0.05);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--bg-light);
            color: var(--text-dark);
            line-height: 1.6;
            overflow-x: hidden;
        }

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

        /* 顶部导航 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background-color: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            transition: var(--transition);
        }

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

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

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

        .brand-name {
            font-size: 20px;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

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

        .nav-link {
            color: var(--text-muted);
            text-decoration: none;
            font-weight: 500;
            font-size: 14px;
            transition: var(--transition);
        }

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

        .nav-btn {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: white;
            padding: 8px 20px;
            border-radius: 9999px;
            text-decoration: none;
            font-weight: 600;
            font-size: 14px;
            transition: var(--transition);
            box-shadow: 0 4px 12px rgba(124, 58, 237, 0.2);
        }

        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(124, 58, 237, 0.3);
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 6px;
            background: none;
            border: none;
            cursor: pointer;
        }

        .menu-toggle span {
            width: 24px;
            height: 2px;
            background-color: var(--text-dark);
            transition: var(--transition);
        }

        /* Hero 首屏 - 严禁出现图片 */
        .hero-section {
            padding: 160px 0 100px;
            background: radial-gradient(circle at 80% 20%, rgba(236, 72, 153, 0.08) 0%, transparent 50%),
                        radial-gradient(circle at 20% 80%, rgba(124, 58, 237, 0.08) 0%, transparent 50%),
                        var(--bg-purple);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: linear-gradient(var(--border-color) 1px, transparent 1px),
                              linear-gradient(90deg, var(--border-color) 1px, transparent 1px);
            background-size: 40px 40px;
            opacity: 0.15;
        }

        .hero-tag {
            display: inline-block;
            background: rgba(124, 58, 237, 0.1);
            color: var(--primary-dark);
            padding: 6px 16px;
            border-radius: 9999px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
            position: relative;
        }

        .hero-title {
            font-size: 44px;
            line-height: 1.25;
            color: var(--text-dark);
            max-width: 900px;
            margin: 0 auto 24px;
            font-weight: 800;
            position: relative;
        }

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

        .hero-desc {
            font-size: 18px;
            color: var(--text-muted);
            max-width: 750px;
            margin: 0 auto 40px;
            position: relative;
        }

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

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            padding: 14px 32px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
            box-shadow: 0 4px 15px rgba(124, 58, 237, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(124, 58, 237, 0.4);
        }

        .btn-secondary {
            background: white;
            color: var(--primary-dark);
            border: 1px solid var(--border-color);
            padding: 14px 32px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
        }

        .btn-secondary:hover {
            background-color: var(--bg-light);
            border-color: var(--primary-light);
        }

        /* 核心数据卡片 */
        .stats-section {
            margin-top: -50px;
            position: relative;
            z-index: 10;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            background: white;
            padding: 40px;
            border-radius: 16px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.05);
            border: 1px solid var(--border-color);
        }

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

        .stat-number {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 8px;
        }

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

        /* 通用区块样式 */
        .section {
            padding: 96px 0;
        }

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

        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 60px;
        }

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

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

        /* 关于我们 */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .about-content h3 {
            font-size: 24px;
            color: var(--primary-dark);
            margin-bottom: 16px;
        }

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

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

        .about-bullets li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-dark);
            font-weight: 600;
        }

        .about-bullets li::before {
            content: "✓";
            color: var(--secondary);
            font-weight: 800;
        }

        .about-visual {
            background: linear-gradient(135deg, var(--primary-light), var(--secondary));
            border-radius: 16px;
            padding: 40px;
            color: white;
            box-shadow: var(--card-shadow);
        }

        .about-visual h4 {
            font-size: 28px;
            margin-bottom: 12px;
            font-weight: 800;
        }

        /* 服务体系 (标签云 & 支持平台) */
        .platform-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
            gap: 16px;
            margin-bottom: 48px;
        }

        .platform-card {
            background: white;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 16px;
            text-align: center;
            font-weight: 600;
            font-size: 14px;
            color: var(--text-dark);
            transition: var(--transition);
        }

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

        /* 制作流程 & 时间线 */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 50%;
            width: 2px;
            height: 100%;
            background-color: var(--border-color);
            transform: translateX(-50%);
        }

        .timeline-item {
            display: flex;
            justify-content: flex-end;
            padding: 24px 0;
            width: 50%;
            position: relative;
        }

        .timeline-item:nth-child(even) {
            align-self: flex-end;
            margin-left: 50%;
            justify-content: flex-start;
        }

        .timeline-dot {
            position: absolute;
            right: -8px;
            top: 36px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background-color: var(--primary);
            border: 3px solid white;
            z-index: 2;
        }

        .timeline-item:nth-child(even) .timeline-dot {
            left: -8px;
        }

        .timeline-content {
            background: white;
            padding: 24px;
            border-radius: 12px;
            box-shadow: var(--card-shadow);
            width: 90%;
            border: 1px solid var(--border-color);
        }

        .timeline-content h3 {
            font-size: 18px;
            color: var(--primary);
            margin-bottom: 8px;
        }

        /* 解决方案 (含有方版/横版素材与图片) */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .solution-card {
            background: white;
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .solution-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 30px rgba(124, 58, 237, 0.08);
        }

        .solution-body {
            padding: 24px;
        }

        .solution-tag {
            display: inline-block;
            background-color: var(--bg-purple);
            color: var(--primary-dark);
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: bold;
            margin-bottom: 12px;
        }

        .solution-body h3 {
            font-size: 20px;
            margin-bottom: 12px;
            color: var(--text-dark);
        }

        .solution-body p {
            color: var(--text-muted);
            font-size: 14px;
            margin-bottom: 16px;
        }

        /* 案例中心 */
        .case-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }

        .case-card {
            background: white;
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--border-color);
        }

        .case-image-wrapper {
            position: relative;
            background: #EAE5F5;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }

        .case-content {
            padding: 32px;
        }

        .case-title {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        /* 智能匹配与需求表单 */
        .form-section {
            background: linear-gradient(135deg, #FAF5FF, #FFF5F7);
        }

        .form-container {
            max-width: 800px;
            margin: 0 auto;
            background: white;
            padding: 48px;
            border-radius: 20px;
            box-shadow: var(--card-shadow);
            border: 1px solid var(--border-color);
        }

        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin-bottom: 24px;
        }

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

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

        .form-label {
            font-weight: 600;
            font-size: 14px;
            color: var(--text-dark);
        }

        .form-input, .form-select, .form-textarea {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 14px;
            outline: none;
            transition: var(--transition);
        }

        .form-input:focus, .form-select:focus, .form-textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.15);
        }

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

        .submit-btn {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            border: none;
            padding: 14px 32px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            width: 100%;
            transition: var(--transition);
        }

        .submit-btn:hover {
            opacity: 0.95;
            transform: translateY(-1px);
        }

        /* 对比评测表格 */
        .table-wrapper {
            overflow-x: auto;
            background: white;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            box-shadow: var(--card-shadow);
        }

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

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

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

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

        .badge-premium {
            background-color: rgba(124, 58, 237, 0.1);
            color: var(--primary);
            padding: 4px 8px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: bold;
        }

        /* 评分显示 */
        .rating-box {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: white;
            padding: 32px;
            border-radius: 16px;
            text-align: center;
            margin-bottom: 40px;
        }

        .rating-num {
            font-size: 64px;
            font-weight: 900;
            line-height: 1;
        }

        .rating-stars {
            color: #FBBF24;
            font-size: 24px;
            margin: 8px 0;
        }

        /* 培训中心 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .training-card {
            background: white;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 32px;
            text-align: center;
            transition: var(--transition);
        }

        .training-card:hover {
            border-color: var(--secondary);
            transform: translateY(-5px);
        }

        .training-icon {
            width: 60px;
            height: 60px;
            background-color: var(--bg-purple);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 24px;
            color: var(--primary);
        }

        .training-card h3 {
            font-size: 18px;
            margin-bottom: 12px;
        }

        .training-card p {
            font-size: 14px;
            color: var(--text-muted);
        }

        /* FAQ折叠面板 */
        .faq-accordion {
            max-width: 900px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--border-color);
        }

        .faq-trigger {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            background: none;
            border: none;
            text-align: left;
            font-size: 16px;
            font-weight: 700;
            color: var(--text-dark);
            cursor: pointer;
        }

        .faq-trigger::after {
            content: '+';
            font-size: 24px;
            color: var(--primary);
            transition: var(--transition);
        }

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

        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
        }

        .faq-content p {
            padding-bottom: 24px;
            color: var(--text-muted);
            font-size: 14px;
        }

        /* 用户评论 */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .comment-card {
            background: white;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 32px;
            position: relative;
        }

        .comment-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }

        .comment-avatar {
            width: 44px;
            height: 44px;
            background: var(--bg-purple);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            color: var(--primary);
        }

        .comment-user-info h4 {
            font-size: 15px;
            font-weight: 700;
        }

        .comment-user-info span {
            font-size: 12px;
            color: var(--text-muted);
        }

        .comment-body {
            font-size: 14px;
            color: var(--text-muted);
        }

        /* 最新资讯 */
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .article-card {
            background: white;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .article-card h3 {
            font-size: 16px;
            margin-bottom: 12px;
        }

        .article-link {
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

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

        /* 浮动工具与客服 */
        .floating-kefu {
            position: fixed;
            bottom: 40px;
            right: 40px;
            z-index: 999;
            background: white;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.15);
            padding: 16px;
            text-align: center;
            width: 150px;
            border: 1px solid var(--border-color);
        }

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

        .floating-kefu p {
            font-size: 12px;
            font-weight: bold;
            color: var(--text-dark);
        }

        /* 页脚 */
        footer {
            background-color: #111827;
            color: #9CA3AF;
            padding: 80px 0 40px;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 2fr;
            gap: 48px;
            margin-bottom: 48px;
        }

        .footer-col h4 {
            color: white;
            font-size: 16px;
            margin-bottom: 20px;
            font-weight: bold;
        }

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

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

        .footer-col ul li a {
            color: #9CA3AF;
            text-decoration: none;
            transition: var(--transition);
        }

        .footer-col ul li a:hover {
            color: white;
        }

        .footer-qrcode {
            display: flex;
            gap: 16px;
        }

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

        .qrcode-item img {
            width: 90px;
            height: 90px;
            border-radius: 8px;
            background: white;
            padding: 4px;
        }

        .qrcode-item p {
            font-size: 12px;
            margin-top: 6px;
        }

        .friend-links {
            border-top: 1px solid #374151;
            padding: 24px 0;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }

        .friend-links a {
            color: #6B7280;
            text-decoration: none;
            font-size: 13px;
        }

        .friend-links a:hover {
            color: white;
        }

        .footer-bottom {
            border-top: 1px solid #374151;
            padding-top: 24px;
            text-align: center;
            font-size: 12px;
            color: #6B7280;
        }

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .solutions-grid, .training-grid, .comments-grid, .articles-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 72px;
                left: 0;
                width: 100%;
                background: white;
                border-bottom: 1px solid var(--border-color);
                padding: 20px;
                gap: 16px;
            }
            .nav-menu.active {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
            .hero-title {
                font-size: 32px;
            }
            .about-grid, .case-grid, .form-grid {
                grid-template-columns: 1fr;
            }
            .form-group-full {
                grid-column: span 1;
            }
            .solutions-grid, .training-grid, .comments-grid, .articles-grid {
                grid-template-columns: 1fr;
            }
            .timeline::before {
                left: 20px;
            }
            .timeline-item {
                width: 100%;
                justify-content: flex-start;
                padding-left: 40px;
            }
            .timeline-item:nth-child(even) {
                margin-left: 0;
            }
            .timeline-dot {
                left: 12px !important;
            }
            .floating-kefu {
                display: none;
            }
        }