:root {
            --primary: #FFD300; /* 鲜黄 */
            --primary-dark: #E6BD00;
            --dark: #121212; /* 碳黑 */
            --dark-card: #1E1E1E;
            --light: #F8F9FA;
            --white: #FFFFFF;
            --text-dark: #1E1E1E;
            --text-muted: #666666;
            --border: #E5E7EB;
            --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.08);
            --shadow-lg: 0 16px 40px rgba(0,0,0,0.12);
        }

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

        html {
            scroll-behavior: smooth;
            font-family: var(--font);
            color: var(--text-dark);
            background-color: var(--light);
        }

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

        /* 统一页面容器 */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 统一标题体系 */
        .section-header {
            text-align: center;
            margin-bottom: 60px;
        }

        .section-header h2 {
            font-size: 2.25rem;
            font-weight: 800;
            color: var(--dark);
            position: relative;
            display: inline-block;
            padding-bottom: 12px;
        }

        .section-header h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background-color: var(--primary);
            border-radius: 2px;
        }

        .section-header p {
            font-size: 1.1rem;
            color: var(--text-muted);
            margin-top: 15px;
        }

        /* 按钮样式 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 28px;
            font-size: 1rem;
            font-weight: 700;
            border-radius: 6px;
            text-decoration: none;
            transition: all 0.3s ease;
            cursor: pointer;
            border: none;
        }

        .btn-yellow {
            background-color: var(--primary);
            color: var(--dark);
        }

        .btn-yellow:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(255, 211, 0, 0.4);
        }

        .btn-dark {
            background-color: var(--dark);
            color: var(--white);
        }

        .btn-dark:hover {
            background-color: #2a2a2a;
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
        }

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

        .btn-outline:hover {
            background-color: var(--dark);
            color: var(--white);
            transform: translateY(-2px);
        }

        /* 导航栏 */
        header {
            position: sticky;
            top: 0;
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            box-shadow: var(--shadow-sm);
            z-index: 1000;
            border-bottom: 2px solid var(--primary);
        }

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

        .brand {
            font-size: 1.5rem;
            font-weight: 900;
            color: var(--dark);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .brand span {
            background: var(--primary);
            padding: 2px 8px;
            border-radius: 4px;
        }

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

        .nav-links a {
            text-decoration: none;
            color: var(--text-dark);
            font-weight: 600;
            font-size: 0.95rem;
            transition: color 0.2s;
        }

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

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

        /* Hero首屏：必须无图 */
        .hero {
            background: linear-gradient(135deg, var(--dark) 0%, #1c1c1c 100%);
            color: var(--white);
            padding: 120px 0 100px 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(255,211,0,0.1) 0%, transparent 60%);
            pointer-events: none;
        }

        .hero h1 {
            font-size: 3rem;
            font-weight: 900;
            line-height: 1.2;
            margin-bottom: 24px;
            background: linear-gradient(to right, #FFFFFF, var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero p {
            font-size: 1.25rem;
            color: #CCCCCC;
            max-width: 800px;
            margin: 0 auto 40px auto;
        }

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

        /* 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: 10;
        }

        .stat-card {
            background-color: var(--white);
            padding: 30px 20px;
            border-radius: 8px;
            box-shadow: var(--shadow-md);
            text-align: center;
            border-top: 4px solid var(--primary);
            transition: transform 0.3s;
        }

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

        .stat-num {
            font-size: 2.5rem;
            font-weight: 900;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .stat-num span {
            color: var(--primary-dark);
        }

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

        /* 通用区块设置 */
        section {
            padding: 80px 0;
            background-color: var(--white);
        }

        section:nth-of-type(even) {
            background-color: var(--light);
        }

        /* 关于我们 */
        .about-inner {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 50px;
            align-items: center;
        }

        .about-logo-wrapper {
            background-color: var(--dark);
            padding: 40px;
            border-radius: 12px;
            text-align: center;
            box-shadow: var(--shadow-lg);
            border-bottom: 8px solid var(--primary);
        }

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

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

        /* 全平台AIGC服务体系 */
        .platform-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
            gap: 15px;
            margin-top: 30px;
        }

        .platform-badge {
            background-color: var(--white);
            border: 1px solid var(--border);
            padding: 12px;
            border-radius: 6px;
            text-align: center;
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--dark);
            transition: all 0.3s;
        }

        .platform-badge:hover {
            background-color: var(--primary);
            border-color: var(--primary);
            transform: scale(1.05);
        }

        /* 制作流程 & 全行业解决方案 */
        .card-grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .feature-card {
            background-color: var(--white);
            padding: 40px 30px;
            border-radius: 8px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: all 0.3s;
        }

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

        .card-icon {
            font-size: 2rem;
            background-color: rgba(255, 211, 0, 0.2);
            width: 60px;
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            margin-bottom: 24px;
            color: var(--dark);
        }

        .feature-card h3 {
            font-size: 1.4rem;
            margin-bottom: 15px;
        }

        .feature-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* 技术指标 & 标准 */
        .tech-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .tech-item {
            background: var(--white);
            padding: 24px;
            border-radius: 8px;
            border-left: 4px solid var(--primary);
            box-shadow: var(--shadow-sm);
        }

        .tech-item h4 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }

        /* 案例中心 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .case-card {
            background-color: var(--white);
            border-radius: 8px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: transform 0.3s;
        }

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

        .case-img-holder {
            width: 100%;
            height: 200px;
            background-color: #E5E7EB;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
        }

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

        .case-info {
            padding: 20px;
        }

        .case-info h4 {
            font-size: 1.2rem;
            margin-bottom: 10px;
        }

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

        /* 对比评测 */
        .review-box {
            background-color: var(--dark);
            color: var(--white);
            padding: 40px;
            border-radius: 12px;
            margin-bottom: 50px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 30px;
        }

        .rating-stars {
            font-size: 2rem;
            color: var(--primary);
        }

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

        .comparison-table-wrapper {
            overflow-x: auto;
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            background-color: var(--white);
            border-radius: 8px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .comparison-table th, .comparison-table td {
            padding: 16px 20px;
            text-align: left;
            border-bottom: 1px solid var(--border);
        }

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

        .comparison-table tr:hover {
            background-color: rgba(255, 211, 0, 0.05);
        }

        .highlight-td {
            background-color: rgba(255, 211, 0, 0.1);
            font-weight: 700;
        }

        /* 需求匹配表单 */
        .form-layout {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 50px;
        }

        .demand-form {
            background-color: var(--white);
            padding: 40px;
            border-radius: 12px;
            box-shadow: var(--shadow-md);
            border-top: 6px solid var(--primary);
        }

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

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

        .form-control {
            width: 100%;
            padding: 12px;
            border: 1px solid var(--border);
            border-radius: 6px;
            font-size: 1rem;
            outline: none;
            transition: border-color 0.2s;
        }

        .form-control:focus {
            border-color: var(--primary-dark);
        }

        .form-info-card {
            background-color: var(--dark);
            color: var(--white);
            padding: 40px;
            border-radius: 12px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .qr-area {
            text-align: center;
            background-color: var(--white);
            padding: 20px;
            border-radius: 8px;
            margin-top: 20px;
            color: var(--dark);
        }

        .qr-area img {
            max-width: 160px;
            height: auto;
            margin-top: 10px;
        }

        /* Token 比价 */
        .token-calc {
            background-color: var(--white);
            border-radius: 8px;
            padding: 30px;
            box-shadow: var(--shadow-sm);
        }

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

        .training-card {
            background-color: var(--white);
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 24px 16px;
            text-align: center;
            transition: all 0.3s;
        }

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

        .training-card h4 {
            font-size: 1.1rem;
            margin-bottom: 12px;
            color: var(--dark);
        }

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

        .testimonial-card {
            background-color: var(--white);
            padding: 30px;
            border-radius: 8px;
            box-shadow: var(--shadow-sm);
            position: relative;
        }

        .testimonial-card::before {
            content: "“";
            font-size: 4rem;
            color: var(--primary);
            position: absolute;
            top: 10px;
            left: 15px;
            opacity: 0.3;
            line-height: 1;
        }

        .testimonial-content {
            font-size: 0.95rem;
            color: var(--text-dark);
            margin-bottom: 20px;
            position: relative;
            z-index: 2;
        }

        .testimonial-author {
            display: flex;
            flex-direction: column;
        }

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

        .author-role {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

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

        .faq-item {
            background-color: var(--white);
            margin-bottom: 12px;
            border-radius: 6px;
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }

        .faq-question {
            padding: 20px 24px;
            font-weight: 700;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background-color: var(--white);
            transition: background-color 0.2s;
        }

        .faq-question:hover {
            background-color: rgba(255, 211, 0, 0.05);
        }

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

        .faq-item.active .faq-answer {
            padding: 16px 24px 24px 24px;
            max-height: 300px;
            border-top: 1px solid var(--border);
        }

        .faq-icon::after {
            content: '+';
            font-size: 1.5rem;
            line-height: 1;
        }

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

        /* 术语百科与排查 */
        .encyclopedia-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .encyclopedia-card {
            background: var(--white);
            padding: 20px;
            border-radius: 8px;
            border: 1px solid var(--border);
        }

        .encyclopedia-card h5 {
            font-size: 1rem;
            color: var(--dark);
            margin-bottom: 8px;
            border-bottom: 2px solid var(--primary);
            padding-bottom: 4px;
            display: inline-block;
        }

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

        /* 资讯与外链 */
        .articles-list {
            margin-top: 30px;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .articles-list a {
            color: var(--dark);
            text-decoration: none;
            font-weight: 700;
            padding: 15px;
            background-color: var(--white);
            border-radius: 6px;
            box-shadow: var(--shadow-sm);
            display: block;
            transition: all 0.2s;
        }

        .articles-list a:hover {
            background-color: var(--primary);
            transform: translateX(5px);
        }

        /* 页脚 */
        footer {
            background-color: var(--dark);
            color: #CCCCCC;
            padding: 60px 0 30px 0;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-logo {
            font-size: 1.8rem;
            font-weight: 900;
            color: var(--white);
            margin-bottom: 15px;
        }

        .footer-logo span {
            color: var(--primary);
        }

        .footer-links h4 {
            color: var(--white);
            margin-bottom: 15px;
            font-size: 1.1rem;
        }

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

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

        .footer-links ul li a {
            color: #AAAAAA;
            text-decoration: none;
            transition: color 0.2s;
        }

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

        .footer-bottom {
            border-top: 1px solid #333;
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }

        .friend-links a {
            color: #888;
            margin-right: 15px;
            text-decoration: none;
        }

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

        /* 浮动客服 */
        .float-kefu {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            background-color: var(--primary);
            width: 60px;
            height: 60px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-lg);
            cursor: pointer;
            transition: transform 0.3s;
        }

        .float-kefu:hover {
            transform: scale(1.1);
        }

        .float-kefu svg {
            width: 30px;
            height: 30px;
            fill: var(--dark);
        }

        .kefu-modal {
            display: none;
            position: fixed;
            bottom: 100px;
            right: 30px;
            background-color: var(--white);
            padding: 20px;
            border-radius: 12px;
            box-shadow: var(--shadow-lg);
            z-index: 1000;
            text-align: center;
            width: 240px;
        }

        .kefu-modal img {
            width: 100%;
            height: auto;
            border-radius: 6px;
            margin-bottom: 10px;
        }

        .kefu-modal h5 {
            margin-bottom: 5px;
            color: var(--dark);
        }

        /* 响应式样式 */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                margin-top: -30px;
            }
            .about-inner {
                grid-template-columns: 1fr;
            }
            .card-grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .case-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .form-layout {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .training-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        @media (max-width: 768px) {
            .hero h1 {
                font-size: 2.2rem;
            }
            .menu-toggle {
                display: block;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: var(--white);
                padding: 20px;
                box-shadow: var(--shadow-md);
                border-top: 1px solid var(--border);
            }
            .nav-links.active {
                display: flex;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .card-grid-3, .case-grid, .testimonial-grid, .tech-list, .encyclopedia-grid, .articles-list {
                grid-template-columns: 1fr;
            }
            .training-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .review-box {
                flex-direction: column;
                text-align: center;
            }
        }