:root {
            --primary: #7c3aed;
            --primary-hover: #6d28d9;
            --secondary: #ff5a1f;
            --accent: #10b981;
            --dark: #0f172a;
            --light-bg: #f8fafc;
            --card-bg: #ffffff;
            --border-color: #1f2937;
            --text-main: #1e293b;
            --text-muted: #64748b;
        }

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

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

        body {
            line-height: 1.6;
            overflow-x: hidden;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
        }

        /* 艳色潮流风 - 潮流卡片与描边阴影 */
        .vibrant-card {
            background: var(--card-bg);
            border: 3px solid var(--border-color);
            box-shadow: 6px 6px 0px var(--border-color);
            border-radius: 12px;
            padding: 24px;
            transition: all 0.2s ease-in-out;
        }

        .vibrant-card:hover {
            transform: translate(-4px, -4px);
            box-shadow: 10px 10px 0px var(--border-color);
        }

        .btn-vibrant {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--secondary);
            color: #fff;
            font-weight: 700;
            padding: 12px 28px;
            border: 3px solid var(--border-color);
            box-shadow: 4px 4px 0px var(--border-color);
            border-radius: 8px;
            text-decoration: none;
            cursor: pointer;
            transition: all 0.15s ease;
        }

        .btn-vibrant:hover {
            transform: translate(-2px, -2px);
            box-shadow: 6px 6px 0px var(--border-color);
            background: #e04a13;
        }

        .btn-vibrant-alt {
            background: var(--primary);
        }

        .btn-vibrant-alt:hover {
            background: var(--primary-hover);
        }

        /* 顶部导航 */
        header {
            background: #fff;
            border-bottom: 3px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 100;
        }

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

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

        .ai-page-logo {
            max-height: 45px;
            width: auto;
        }

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

        .nav-menu a {
            color: var(--text-main);
            text-decoration: none;
            font-weight: 600;
            transition: color 0.2s;
            font-size: 14px;
        }

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

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

        /* 移动端菜单按钮 */
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            cursor: pointer;
        }

        /* Hero首屏 - 严格无图 */
        .hero-section {
            background: radial-gradient(circle at 10% 20%, rgba(124, 58, 237, 0.08) 0%, rgba(255, 90, 31, 0.05) 90.2%);
            border-bottom: 3px solid var(--border-color);
            padding: 80px 0 60px 0;
            text-align: center;
        }

        .hero-badge {
            background: var(--accent);
            color: #fff;
            border: 2px solid var(--border-color);
            padding: 4px 16px;
            border-radius: 20px;
            font-weight: bold;
            display: inline-block;
            margin-bottom: 24px;
            box-shadow: 2px 2px 0px var(--border-color);
        }

        .hero-h1 {
            font-size: 2.5rem;
            line-height: 1.25;
            color: var(--dark);
            margin-bottom: 20px;
            font-weight: 800;
        }

        .hero-p {
            font-size: 1.15rem;
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto 35px auto;
        }

        .hero-cta {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin-bottom: 48px;
            flex-wrap: wrap;
        }

        /* 数据指标卡片 */
        .hero-stats {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin-top: 20px;
        }

        .stat-card {
            background: #fff;
            border: 3px solid var(--border-color);
            box-shadow: 4px 4px 0px var(--border-color);
            border-radius: 10px;
            padding: 20px;
            text-align: center;
        }

        .stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 5px;
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 600;
        }

        /* 通用区块样式 */
        .section-padding {
            padding: 80px 0;
            border-bottom: 3px solid var(--border-color);
        }

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

        .section-title {
            font-size: 2rem;
            font-weight: 800;
            display: inline-block;
            position: relative;
            z-index: 1;
            padding: 0 10px;
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 0;
            right: 0;
            height: 12px;
            background: rgba(255, 90, 31, 0.2);
            z-index: -1;
        }

        .section-subtitle {
            color: var(--text-muted);
            margin-top: 10px;
            font-size: 1rem;
        }

        /* 关于我们 */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.5rem;
            margin-bottom: 15px;
            color: var(--primary);
        }

        .about-features {
            margin-top: 25px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
        }

        .about-feat-item {
            background: #fff;
            padding: 12px;
            border-left: 4px solid var(--secondary);
            font-weight: 600;
            font-size: 0.9rem;
        }

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

        .service-item-title {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--dark);
        }

        /* 制作流程 */
        .process-flow {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
            position: relative;
        }

        .process-step {
            text-align: center;
            background: #fff;
            border: 3px solid var(--border-color);
            border-radius: 12px;
            padding: 30px 20px;
            position: relative;
        }

        .step-num {
            position: absolute;
            top: -20px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--secondary);
            color: #fff;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            border: 3px solid var(--border-color);
        }

        .step-title {
            font-weight: 700;
            margin-top: 15px;
            margin-bottom: 8px;
        }

        /* 全行业解决方案 */
        .solution-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 25px;
        }

        /* 服务网络与流程 */
        .grid-2col {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .timeline {
            border-left: 3px solid var(--border-color);
            padding-left: 20px;
            margin-left: 10px;
        }

        .timeline-item {
            position: relative;
            margin-bottom: 25px;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -28px;
            top: 5px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--accent);
            border: 2px solid var(--border-color);
        }

        .timeline-title {
            font-weight: 700;
            margin-bottom: 5px;
        }

        /* 对比评测 */
        .rating-box {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            margin-bottom: 40px;
            background: #fff;
            padding: 20px;
            border: 3px solid var(--border-color);
            border-radius: 12px;
            box-shadow: 4px 4px 0px var(--border-color);
        }

        .rating-num {
            font-size: 3rem;
            font-weight: 900;
            color: var(--secondary);
        }

        .rating-stars {
            color: #fbbf24;
            font-size: 1.5rem;
        }

        .table-responsive {
            overflow-x: auto;
            border: 3px solid var(--border-color);
            border-radius: 12px;
            box-shadow: 6px 6px 0px var(--border-color);
            background: #fff;
        }

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

        th, td {
            padding: 16px;
            border-bottom: 2px solid #e2e8f0;
        }

        th {
            background-color: var(--dark);
            color: #fff;
            font-weight: 700;
        }

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

        .highlight-row {
            background-color: rgba(124, 58, 237, 0.05);
            font-weight: 600;
        }

        /* 案例展示区 */
        .gallery-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
        }

        .gallery-item {
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

        .gallery-img-wrapper {
            aspect-ratio: 16/9;
            overflow: hidden;
            border-bottom: 3px solid var(--border-color);
            background: #e2e8f0;
        }

        .gallery-img-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s;
        }

        .gallery-item:hover .gallery-img-wrapper img {
            transform: scale(1.05);
        }

        .gallery-info {
            padding: 15px;
        }

        /* 需求匹配表单 */
        .form-section {
            background: radial-gradient(circle at 90% 10%, rgba(255, 90, 31, 0.08) 0%, rgba(124, 58, 237, 0.05) 90.2%);
        }

        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .main-form {
            background: #fff;
            border: 3px solid var(--border-color);
            box-shadow: 8px 8px 0px var(--border-color);
            padding: 30px;
            border-radius: 12px;
        }

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

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

        .form-control {
            width: 100%;
            padding: 10px 14px;
            border: 2px solid var(--border-color);
            border-radius: 6px;
            font-size: 1rem;
            outline: none;
            background: var(--light-bg);
        }

        .form-control:focus {
            border-color: var(--primary);
            background: #fff;
        }

        /* 标签云与术语 */
        .badge-container {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 15px;
        }

        .model-badge {
            background: #fff;
            border: 2px solid var(--border-color);
            padding: 4px 12px;
            border-radius: 6px;
            font-size: 0.85rem;
            font-weight: 600;
            box-shadow: 2px 2px 0px var(--border-color);
        }

        /* FAQ折叠面板 */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            margin-bottom: 15px;
            border: 3px solid var(--border-color);
            border-radius: 8px;
            background: #fff;
            overflow: hidden;
        }

        .faq-question {
            padding: 18px 20px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 700;
            user-select: none;
        }

        .faq-answer {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.2s ease-out, padding 0.2s ease-out;
            border-top: 0 solid var(--border-color);
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        .faq-item.active .faq-answer {
            padding: 18px 20px;
            max-height: 500px;
            border-top: 2px solid var(--border-color);
        }

        .faq-icon::after {
            content: '+';
            font-size: 1.25rem;
            font-weight: bold;
        }

        .faq-item.active .faq-icon::after {
            content: '−';
        }

        /* 诊断排查工具样式 */
        .troubleshoot-box {
            background: #fff;
            border: 3px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
            box-shadow: 4px 4px 0px var(--border-color);
        }

        .option-buttons {
            display: flex;
            gap: 15px;
            margin-top: 20px;
            flex-wrap: wrap;
        }

        .diag-btn {
            background: var(--light-bg);
            border: 2px solid var(--border-color);
            padding: 8px 16px;
            border-radius: 6px;
            cursor: pointer;
            font-weight: 600;
        }

        .diag-btn.active {
            background: var(--primary);
            color: #fff;
        }

        .diag-result {
            margin-top: 25px;
            padding: 15px;
            border-left: 4px solid var(--accent);
            background: rgba(16, 185, 129, 0.05);
            display: none;
        }

        /* 用户评论 */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
        }

        .testi-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 15px;
        }

        .testi-name {
            font-weight: 700;
        }

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

        /* 资讯与百科 */
        .news-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

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

        .article-item {
            margin-bottom: 15px;
            padding-bottom: 15px;
            border-bottom: 1px dashed var(--border-color);
        }

        .article-item a {
            color: var(--text-main);
            text-decoration: none;
            font-weight: 600;
        }

        .article-item a:hover {
            color: var(--primary);
        }

        /* 友情链接与页脚 */
        footer {
            background: var(--dark);
            color: #e2e8f0;
            padding: 60px 0 30px 0;
            border-top: 3px solid var(--border-color);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-col h4 {
            color: #fff;
            margin-bottom: 20px;
            font-size: 1.1rem;
            border-left: 3px solid var(--secondary);
            padding-left: 10px;
        }

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

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

        .footer-links a {
            color: #94a3b8;
            text-decoration: none;
            font-size: 0.9rem;
            transition: color 0.2s;
        }

        .footer-links a:hover {
            color: #fff;
        }

        .friend-links-box {
            border-top: 1px solid #334155;
            padding-top: 20px;
            margin-bottom: 20px;
            font-size: 0.85rem;
        }

        .friend-links-box a {
            color: #94a3b8;
            margin-right: 15px;
            text-decoration: none;
        }

        .friend-links-box a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid #334155;
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            flex-wrap: wrap;
            gap: 15px;
        }

        /* 侧边悬浮窗口 */
        .fixed-contact {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 99;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .contact-trigger {
            background: var(--primary);
            color: white;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 4px 12px rgba(0,0,0,0.15);
            border: 2px solid var(--border-color);
        }

        .contact-popover {
            position: absolute;
            bottom: 60px;
            right: 0;
            background: white;
            border: 3px solid var(--border-color);
            border-radius: 12px;
            padding: 20px;
            width: 250px;
            box-shadow: 4px 4px 0px rgba(0,0,0,0.15);
            display: none;
        }

        .contact-popover.show {
            display: block;
        }

        .contact-popover img {
            width: 100%;
            height: auto;
            border: 2px solid var(--border-color);
            margin-top: 10px;
        }

        /* 响应式调整 */
        @media (max-width: 992px) {
            .hero-h1 {
                font-size: 2rem;
            }
            .about-grid, .grid-2col, .form-grid, .news-grid {
                grid-template-columns: 1fr;
            }
            .mobile-menu-btn {
                display: block;
            }
            .nav-menu {
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 20px;
                border-bottom: 3px solid var(--border-color);
                display: none;
            }
            .nav-menu.active {
                display: flex;
            }
        }