:root {
            --bg-primary: #f8fafd;
            --bg-secondary: #ffffff;
            --text-primary: #0f172a;
            --text-secondary: #475569;
            --color-accent-1: #ff5a1f; /* 活力艳橙 */
            --color-accent-2: #6366f1; /* 科技霓虹紫 */
            --color-border: #e2e8f0;
            --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            --container-width: 1200px;
        }

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

        body {
            font-family: var(--font-main);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
        }

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

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

        .section-title {
            text-align: center;
            font-size: 2.2rem;
            margin-bottom: 15px;
            color: var(--text-primary);
            font-weight: 800;
        }

        .section-desc {
            text-align: center;
            color: var(--text-secondary);
            max-width: 700px;
            margin: 0 auto 50px auto;
            font-size: 1.1rem;
        }

        /* 顶部导航 */
        header {
            background-color: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--color-border);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

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

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

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

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

        .nav-links a {
            text-decoration: none;
            color: var(--text-secondary);
            font-size: 0.95rem;
            font-weight: 500;
            transition: color 0.3s;
        }

        .nav-links a:hover {
            color: var(--color-accent-1);
        }

        .nav-btn {
            background-color: var(--color-accent-1);
            color: #ffffff;
            padding: 8px 18px;
            border-radius: 6px;
            text-decoration: none;
            font-size: 0.9rem;
            font-weight: bold;
            transition: background 0.3s, transform 0.2s;
            border: none;
            cursor: pointer;
        }

        .nav-btn:hover {
            background-color: #e04810;
            transform: translateY(-2px);
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
        }

        .menu-toggle span {
            width: 25px;
            height: 3px;
            background-color: var(--text-primary);
            transition: 0.3s;
        }

        /* Hero首屏 - 严禁出现任何图片 */
        .hero {
            background: linear-gradient(135deg, #ffffff 0%, #edf2f9 100%);
            padding: 100px 0 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(99, 102, 241, 0.05) 0%, rgba(255, 90, 31, 0.02) 60%, transparent 100%);
            z-index: 1;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 900px;
            margin: 0 auto;
        }

        .hero-tag {
            display: inline-block;
            background: rgba(255, 90, 31, 0.1);
            color: var(--color-accent-1);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: bold;
            margin-bottom: 20px;
            border: 1px solid rgba(255, 90, 31, 0.2);
        }

        .hero-title h1 {
            font-size: 2.8rem;
            line-height: 1.3;
            margin-bottom: 20px;
            font-weight: 900;
        }

        .hero-title span {
            background: linear-gradient(90deg, var(--color-accent-1), var(--color-accent-2));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 1.25rem;
            color: var(--text-secondary);
            margin-bottom: 35px;
            line-height: 1.7;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        .btn-primary {
            background: linear-gradient(90deg, var(--color-accent-1), #ff7a45);
            color: white;
            padding: 14px 32px;
            border-radius: 8px;
            font-size: 1.05rem;
            font-weight: bold;
            text-decoration: none;
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 15px rgba(255, 90, 31, 0.3);
            transition: transform 0.2s, box-shadow 0.3s;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 90, 31, 0.4);
        }

        .btn-secondary {
            background-color: var(--bg-secondary);
            color: var(--text-primary);
            padding: 14px 32px;
            border-radius: 8px;
            font-size: 1.05rem;
            font-weight: bold;
            text-decoration: none;
            border: 1px solid var(--color-border);
            transition: border-color 0.3s, background 0.3s;
        }

        .btn-secondary:hover {
            border-color: var(--color-accent-2);
            background-color: #f8fafc;
        }

        /* 核心数据指标 */
        .data-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 60px;
        }

        .stat-card {
            background-color: var(--bg-secondary);
            border: 1px solid var(--color-border);
            padding: 25px 20px;
            border-radius: 12px;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
            transition: transform 0.3s;
        }

        .stat-card:hover {
            transform: translateY(-5px);
            border-color: var(--color-accent-1);
        }

        .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--color-accent-1);
            margin-bottom: 5px;
        }

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

        /* 关于我们与软件介绍 */
        .about-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 50px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
            color: var(--text-primary);
        }

        .about-text p {
            color: var(--text-secondary);
            margin-bottom: 20px;
            font-size: 1.05rem;
        }

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

        .features-list li {
            position: relative;
            padding-left: 25px;
            margin-bottom: 12px;
            color: var(--text-primary);
            font-weight: 500;
        }

        .features-list li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--color-accent-1);
            font-weight: bold;
        }

        /* 服务体系卡片 */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background-color: var(--bg-secondary);
            border: 1px solid var(--color-border);
            border-radius: 12px;
            padding: 35px 25px;
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background-color: var(--color-accent-2);
            opacity: 0;
            transition: opacity 0.3s;
        }

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

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.08);
            border-color: var(--color-accent-2);
        }

        .service-icon {
            font-size: 2rem;
            margin-bottom: 20px;
            display: inline-block;
        }

        .service-title {
            font-size: 1.3rem;
            margin-bottom: 12px;
            color: var(--text-primary);
        }

        .service-desc {
            color: var(--text-secondary);
            font-size: 0.95rem;
        }

        /* 全自动AIGC制作流程与时间线 */
        .timeline {
            position: relative;
            max-width: 900px;
            margin: 0 auto;
        }

        .timeline::before {
            content: '';
            position: absolute;
            width: 4px;
            background-color: var(--color-border);
            top: 0;
            bottom: 0;
            left: 50%;
            margin-left: -2px;
        }

        .timeline-item {
            padding: 10px 40px;
            position: relative;
            width: 50%;
            box-sizing: border-box;
        }

        .timeline-item.left {
            left: 0;
            text-align: right;
        }

        .timeline-item.right {
            left: 50%;
        }

        .timeline-item::after {
            content: '';
            position: absolute;
            width: 20px;
            height: 20px;
            right: -10px;
            background-color: var(--bg-secondary);
            border: 4px solid var(--color-accent-1);
            top: 15px;
            border-radius: 50%;
            z-index: 1;
        }

        .timeline-item.right::after {
            left: -10px;
        }

        .timeline-content {
            padding: 20px;
            background-color: var(--bg-secondary);
            position: relative;
            border-radius: 8px;
            border: 1px solid var(--color-border);
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.02);
        }

        .timeline-num {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--color-accent-1);
            margin-bottom: 5px;
        }

        /* 对比评测表格 */
        .comparison-table-wrapper {
            overflow-x: auto;
            border-radius: 12px;
            border: 1px solid var(--color-border);
            background-color: var(--bg-secondary);
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
        }

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

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

        .comparison-table th {
            background-color: #f1f5f9;
            font-weight: 700;
            color: var(--text-primary);
        }

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

        .comparison-table tr.highlight {
            background-color: rgba(255, 90, 31, 0.03);
        }

        .badge-star {
            display: inline-block;
            background-color: #fef08a;
            color: #a16207;
            padding: 3px 8px;
            border-radius: 4px;
            font-size: 0.85rem;
            font-weight: bold;
        }

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

        .case-card {
            background-color: var(--bg-secondary);
            border-radius: 12px;
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: transform 0.3s;
        }

        .case-card:hover {
            transform: translateY(-5px);
        }

        .case-img-container {
            width: 100%;
            aspect-ratio: 16 / 9;
            background-color: #e2e8f0;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
        }

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

        .case-info {
            padding: 20px;
        }

        .case-title {
            font-size: 1.1rem;
            font-weight: bold;
            margin-bottom: 10px;
        }

        .case-desc {
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        /* Token比价及大模型支持 */
        .model-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-top: 30px;
        }

        .model-tag {
            background-color: var(--bg-secondary);
            border: 1px solid var(--color-border);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.85rem;
            color: var(--text-primary);
            transition: all 0.2s;
        }

        .model-tag:hover {
            border-color: var(--color-accent-1);
            color: var(--color-accent-1);
            transform: scale(1.05);
        }

        /* 职业技术培训 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 15px;
        }

        .training-card {
            background-color: var(--bg-secondary);
            border: 1px solid var(--color-border);
            padding: 20px 15px;
            border-radius: 8px;
            text-align: center;
            transition: all 0.3s;
        }

        .training-card:hover {
            border-color: var(--color-accent-2);
            box-shadow: 0 4px 12px rgba(99, 102, 241, 0.1);
        }

        .training-icon {
            font-size: 1.5rem;
            margin-bottom: 10px;
            color: var(--color-accent-2);
        }

        .training-title {
            font-size: 0.95rem;
            font-weight: bold;
        }

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

        .comment-card {
            background-color: var(--bg-secondary);
            border: 1px solid var(--color-border);
            border-radius: 12px;
            padding: 25px;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.03);
            position: relative;
        }

        .comment-text {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin-bottom: 20px;
            line-height: 1.6;
        }

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

        .user-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: var(--color-accent-2);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 0.9rem;
        }

        .user-info h4 {
            font-size: 0.95rem;
            color: var(--text-primary);
        }

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

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

        .faq-item {
            background-color: var(--bg-secondary);
            border: 1px solid var(--color-border);
            border-radius: 8px;
            margin-bottom: 12px;
            overflow: hidden;
        }

        .faq-header {
            padding: 18px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            user-select: none;
            transition: background 0.3s;
        }

        .faq-header:hover {
            background-color: #f8fafc;
        }

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

        .faq-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        .faq-item.active .faq-body {
            padding: 0 24px 20px 24px;
        }

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

        /* 智能需求匹配与表单 */
        .form-section-wrapper {
            background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
            border-radius: 20px;
            padding: 50px 40px;
            border: 1px solid var(--color-border);
        }

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

        .form-info h3 {
            font-size: 1.8rem;
            margin-bottom: 15px;
        }

        .form-info p {
            color: var(--text-secondary);
            margin-bottom: 25px;
        }

        .contact-methods {
            list-style: none;
        }

        .contact-methods li {
            margin-bottom: 15px;
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1rem;
        }

        .contact-methods a {
            color: var(--color-accent-2);
            text-decoration: none;
        }

        .contact-methods a:hover {
            text-decoration: underline;
        }

        .contact-qrcode {
            margin-top: 25px;
            display: flex;
            gap: 20px;
            align-items: center;
        }

        .contact-qrcode img {
            width: 100px;
            height: 100px;
            border: 1px solid var(--color-border);
            border-radius: 8px;
        }

        .custom-form {
            background-color: var(--bg-secondary);
            padding: 30px;
            border-radius: 12px;
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05);
        }

        .form-group-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
            margin-bottom: 15px;
        }

        .form-group {
            margin-bottom: 15px;
        }

        .form-group label {
            display: block;
            margin-bottom: 6px;
            font-size: 0.9rem;
            font-weight: 600;
        }

        .form-control {
            width: 100%;
            padding: 10px 14px;
            border: 1px solid var(--color-border);
            border-radius: 6px;
            font-size: 0.95rem;
            outline: none;
            transition: border-color 0.3s;
        }

        .form-control:focus {
            border-color: var(--color-accent-1);
        }

        textarea.form-control {
            resize: vertical;
            min-height: 80px;
        }

        .form-submit-btn {
            width: 100%;
            background: linear-gradient(90deg, var(--color-accent-1), var(--color-accent-2));
            color: white;
            border: none;
            padding: 12px;
            font-size: 1rem;
            font-weight: bold;
            border-radius: 6px;
            cursor: pointer;
            transition: opacity 0.3s;
        }

        .form-submit-btn:hover {
            opacity: 0.9;
        }

        /* 资讯与友情链接 */
        .info-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
        }

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

        .article-item {
            padding: 15px 0;
            border-bottom: 1px solid var(--color-border);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .article-item:last-child {
            border-bottom: none;
        }

        .article-link {
            color: var(--text-primary);
            text-decoration: none;
            font-weight: 500;
            transition: color 0.2s;
        }

        .article-link:hover {
            color: var(--color-accent-1);
        }

        .article-date {
            font-size: 0.85rem;
            color: var(--text-secondary);
        }

        .wiki-card {
            background-color: var(--bg-secondary);
            border: 1px solid var(--color-border);
            border-radius: 12px;
            padding: 25px;
        }

        .wiki-list {
            list-style: none;
            padding-left: 0;
        }

        .wiki-list li {
            margin-bottom: 12px;
            font-size: 0.9rem;
        }

        .wiki-list strong {
            color: var(--color-accent-2);
        }

        /* 页脚 */
        footer {
            background-color: #0f172a;
            color: #94a3b8;
            padding: 60px 0 30px 0;
            border-top: 4px solid var(--color-accent-1);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-logo {
            filter: brightness(0) invert(1);
            max-height: 35px;
            margin-bottom: 15px;
        }

        .footer-title {
            color: #ffffff;
            font-size: 1.1rem;
            font-weight: bold;
            margin-bottom: 20px;
        }

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

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

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

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

        .friend-links-box {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .friend-links-box a {
            color: #94a3b8;
            text-decoration: none;
            background-color: #1e293b;
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 0.8rem;
            transition: all 0.2s;
        }

        .friend-links-box a:hover {
            color: #ffffff;
            background-color: var(--color-accent-1);
        }

        .footer-bottom {
            border-top: 1px solid #1e293b;
            padding-top: 25px;
            text-align: center;
            font-size: 0.85rem;
            color: #64748b;
        }

        /* 悬浮工具 */
        .floating-widgets {
            position: fixed;
            right: 20px;
            bottom: 20px;
            z-index: 1000;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .float-btn {
            width: 48px;
            height: 48px;
            background-color: var(--bg-secondary);
            border: 1px solid var(--color-border);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            transition: all 0.3s;
            position: relative;
        }

        .float-btn:hover {
            background-color: var(--color-accent-1);
            border-color: var(--color-accent-1);
            color: #ffffff;
            transform: scale(1.05);
        }

        .float-qrcode-box {
            position: absolute;
            bottom: 60px;
            right: 0;
            background-color: var(--bg-secondary);
            border: 1px solid var(--color-border);
            padding: 10px;
            border-radius: 8px;
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
            display: none;
            text-align: center;
            width: 140px;
        }

        .float-qrcode-box img {
            width: 120px;
            height: 120px;
        }

        .float-qrcode-box p {
            font-size: 0.75rem;
            color: var(--text-primary);
            margin-top: 5px;
        }

        .float-btn:hover .float-qrcode-box {
            display: block;
        }

        /* 响应式调整 */
        @media (max-width: 992px) {
            .grid-3, .comments-grid {
                grid-template-columns: 1fr 1fr;
            }
            .about-grid, .form-grid, .info-grid {
                grid-template-columns: 1fr;
            }
            .training-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .menu-toggle {
                display: flex;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: var(--bg-secondary);
                border-bottom: 1px solid var(--color-border);
                padding: 20px;
                gap: 15px;
            }
            .nav-links.active {
                display: flex;
            }
            .hero-title h1 {
                font-size: 2rem;
            }
            .data-stats {
                grid-template-columns: 1fr 1fr;
            }
            .timeline::before {
                left: 20px;
            }
            .timeline-item {
                width: 100%;
                padding-left: 45px;
                padding-right: 0;
                text-align: left !important;
            }
            .timeline-item.right {
                left: 0;
            }
            .timeline-item::after {
                left: 10px;
                right: auto;
            }
            .grid-3, .comments-grid, .case-grid {
                grid-template-columns: 1fr;
            }
            .training-grid {
                grid-template-columns: 1fr 1fr;
            }
            .form-section-wrapper {
                padding: 30px 20px;
            }
            .form-group-row {
                grid-template-columns: 1fr;
            }
        }