:root {
            --primary: #FFD300; /* 鲜黄 */
            --primary-hover: #E5BE00;
            --dark: #111111; /* 碳黑 */
            --light-bg: #FCFCFA; /* 极浅米白 */
            --card-bg: #FFFFFF;
            --text-main: #222222;
            --text-muted: #666666;
            --border-color: #EAEAEA;
            --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
            --container-width: 1200px;
        }

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

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

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }

        /* 统一容器 */
        .container {
            width: 100%;
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 20px;
        }

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

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

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

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

        .logo-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: 1px;
        }

        .logo-text span {
            background-color: var(--primary);
            padding: 2px 6px;
            border-radius: 4px;
            margin-left: 5px;
        }

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

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

        .nav-menu a {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            padding: 8px 12px;
            border-radius: 4px;
        }

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

        .nav-btn {
            background-color: var(--dark);
            color: var(--primary);
            padding: 8px 16px;
            border-radius: 4px;
            font-weight: 700;
            font-size: 14px;
            border: 2px solid var(--dark);
        }

        .nav-btn:hover {
            background-color: var(--primary);
            color: var(--dark);
            border-color: var(--primary);
        }

        /* 移动端菜单开关 */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            border: none;
            background: none;
        }

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

        /* 首屏 Hero - 无图片，纯文字与黄色渐变背景设计 */
        .hero {
            background: linear-gradient(135deg, #FFFDF0 0%, #FFF9C4 100%);
            border-bottom: 1px solid var(--border-color);
            padding: 100px 0 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -20%;
            left: -10%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255,211,0,0.4) 0%, rgba(255,255,255,0) 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -10%;
            right: -5%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255,211,0,0.3) 0%, rgba(255,255,255,0) 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-tag {
            display: inline-block;
            background-color: var(--dark);
            color: var(--primary);
            font-weight: 700;
            font-size: 14px;
            padding: 6px 16px;
            border-radius: 50px;
            margin-bottom: 20px;
            text-transform: uppercase;
            letter-spacing: 1px;
            box-shadow: 0 4px 10px rgba(0,0,0,0.15);
        }

        .hero h1 {
            font-size: 42px;
            font-weight: 900;
            color: var(--dark);
            line-height: 1.2;
            margin-bottom: 24px;
            letter-spacing: -0.5px;
        }

        .hero p {
            font-size: 18px;
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto 35px auto;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 15px;
            flex-wrap: wrap;
        }

        .btn-main {
            background-color: var(--primary);
            color: var(--dark);
            font-weight: 800;
            padding: 15px 32px;
            font-size: 16px;
            border-radius: 4px;
            box-shadow: 0 4px 14px rgba(255,211,0,0.4);
            border: 2px solid var(--primary);
        }

        .btn-main:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255,211,0,0.6);
        }

        .btn-secondary {
            background-color: var(--dark);
            color: white;
            font-weight: 700;
            padding: 15px 32px;
            font-size: 16px;
            border-radius: 4px;
            border: 2px solid var(--dark);
        }

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

        /* 数据指标卡片 (关于我们 & 全国服务网络) */
        .section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
        }

        .section-light {
            background-color: #FFFFFF;
        }

        .section-yellow-light {
            background-color: #FFFDF4;
        }

        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 50px auto;
        }

        .section-header h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--dark);
            position: relative;
            display: inline-block;
            margin-bottom: 15px;
        }

        .section-header h2::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 100%;
            height: 8px;
            background-color: var(--primary);
            z-index: -1;
        }

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

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .stat-card {
            background-color: var(--card-bg);
            border: 2px solid var(--border-color);
            padding: 30px 20px;
            text-align: center;
            border-radius: 8px;
            transition: var(--transition);
        }

        .stat-card:hover {
            border-color: var(--primary);
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(255,211,0,0.1);
        }

        .stat-number {
            font-size: 36px;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 5px;
        }

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

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

        /* 平台服务体系 (全平台AIGC服务体系 & 软件介绍) */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            border-top: 5px solid var(--dark);
            padding: 35px 25px;
            border-radius: 8px;
            transition: var(--transition);
        }

        .service-card:hover {
            border-top-color: var(--primary);
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
            transform: translateY(-5px);
        }

        .service-icon {
            width: 50px;
            height: 50px;
            background-color: var(--primary);
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 20px;
            font-weight: bold;
        }

        .service-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--dark);
        }

        .service-card p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 15px;
        }

        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }

        .tag-list span {
            font-size: 12px;
            background-color: #F1F1F1;
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 500;
        }

        /* 流程步骤 (全自动AIGC制作流程 & 标准化服务全流程) */
        .step-timeline {
            display: flex;
            justify-content: space-between;
            position: relative;
            margin-top: 40px;
        }

        .step-timeline::before {
            content: '';
            position: absolute;
            top: 25px;
            left: 5%;
            width: 90%;
            height: 3px;
            background-color: var(--border-color);
            z-index: 1;
        }

        .step-node {
            width: 22%;
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .step-num {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: var(--dark);
            color: var(--primary);
            font-weight: 800;
            font-size: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px auto;
            border: 4px solid var(--light-bg);
            transition: var(--transition);
        }

        .step-node:hover .step-num {
            background-color: var(--primary);
            color: var(--dark);
            transform: scale(1.1);
        }

        .step-node h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .step-node p {
            font-size: 13px;
            color: var(--text-muted);
            padding: 0 10px;
        }

        /* 对比表格 (对比评测) */
        .comparison-table-wrapper {
            overflow-x: auto;
            background-color: var(--card-bg);
            border-radius: 8px;
            border: 2px solid var(--border-color);
        }

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

        .comparison-table th, .comparison-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-color);
            font-size: 14px;
        }

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

        .comparison-table th:nth-child(2) {
            background-color: var(--primary);
            color: var(--dark);
        }

        .comparison-table tr:hover {
            background-color: #FAF9F0;
        }

        .score-badge {
            background-color: var(--dark);
            color: var(--primary);
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: bold;
        }

        .check-icon {
            color: green;
            font-weight: bold;
        }

        .cross-icon {
            color: red;
            font-weight: bold;
        }

        /* 案例展示 (客户案例中心 - 使用要求的图片) */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .case-card {
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            overflow: hidden;
            transition: var(--transition);
        }

        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
        }

        .case-img-container {
            width: 100%;
            height: 250px;
            overflow: hidden;
            background-color: #F1F1F1;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .case-img-container img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

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

        .case-body {
            padding: 20px;
        }

        .case-tag {
            font-size: 12px;
            background-color: var(--primary);
            color: var(--dark);
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: bold;
            display: inline-block;
            margin-bottom: 10px;
        }

        .case-body h3 {
            font-size: 18px;
            margin-bottom: 8px;
        }

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

        /* 智能匹配与比价参考 (Token比价参考) */
        .tool-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .calculator-card {
            background-color: var(--card-bg);
            border: 2px solid var(--dark);
            border-radius: 8px;
            padding: 30px;
            box-shadow: 6px 6px 0px var(--dark);
        }

        .calc-title {
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

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

        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 700;
            margin-bottom: 5px;
        }

        .form-control {
            width: 100%;
            padding: 10px;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            font-size: 14px;
        }

        .calc-result {
            margin-top: 20px;
            background-color: #FFFDF0;
            padding: 15px;
            border-radius: 4px;
            border: 1px dashed var(--primary);
        }

        /* 职业技术培训 */
        .training-badge {
            background-color: #FDF6D6;
            color: #B58900;
            font-size: 12px;
            padding: 4px 10px;
            border-radius: 4px;
            display: inline-block;
            margin-bottom: 10px;
            font-weight: 700;
        }

        /* 行业资讯 / 知识库 (带最新文章链接) */
        .news-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .news-item {
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            padding: 15px 20px;
            border-radius: 6px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: var(--transition);
        }

        .news-item:hover {
            border-color: var(--primary);
            transform: translateX(5px);
        }

        .news-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--dark);
        }

        .news-date {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 常见用户问题 FAQ (折叠面板) */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 6px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-question {
            padding: 15px 20px;
            font-weight: 700;
            font-size: 15px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background-color: #FFFFFF;
        }

        .faq-question::after {
            content: '+';
            font-size: 18px;
            font-weight: bold;
            color: var(--text-muted);
            transition: var(--transition);
        }

        .faq-item.active .faq-question::after {
            content: '-';
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background-color: #FAF9F3;
        }

        .faq-answer-content {
            padding: 15px 20px;
            font-size: 14px;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
        }

        /* 客户评论卡片 (6条用户评论) */
        .reviews-slider {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .review-card {
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            padding: 25px;
            border-radius: 8px;
            position: relative;
        }

        .review-card::before {
            content: '“';
            font-size: 60px;
            color: rgba(255,211,0,0.3);
            position: absolute;
            top: -10px;
            left: 15px;
            font-family: Georgia, serif;
        }

        .review-text {
            font-size: 14px;
            color: var(--text-main);
            margin-bottom: 20px;
            position: relative;
            z-index: 2;
        }

        .review-author {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .author-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: var(--primary);
            font-weight: bold;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
        }

        .author-info h5 {
            font-size: 14px;
            font-weight: 700;
        }

        .author-info p {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 智能需求匹配与表单 */
        .contact-section-wrapper {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
        }

        .form-card {
            background-color: var(--card-bg);
            border: 2px solid var(--dark);
            border-radius: 8px;
            padding: 30px;
        }

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

        .btn-submit {
            background-color: var(--primary);
            color: var(--dark);
            border: none;
            width: 100%;
            padding: 12px;
            font-weight: 800;
            border-radius: 4px;
            cursor: pointer;
            box-shadow: 0 4px 10px rgba(255,211,0,0.3);
            transition: var(--transition);
        }

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

        /* 侧边信息区与官方联系渠道 */
        .contact-info-card {
            background-color: var(--dark);
            color: white;
            padding: 30px;
            border-radius: 8px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .contact-info-card h3 {
            color: var(--primary);
            font-size: 22px;
            margin-bottom: 20px;
        }

        .contact-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 15px;
            margin-bottom: 30px;
        }

        .contact-list li {
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .qr-codes {
            display: flex;
            gap: 20px;
            margin-top: 15px;
        }

        .qr-box {
            text-align: center;
            font-size: 12px;
        }

        .qr-box img {
            width: 100px;
            height: 100px;
            border-radius: 4px;
            margin-bottom: 5px;
            background-color: white;
            padding: 5px;
        }

        /* 页脚 */
        footer {
            background-color: var(--dark);
            color: #999;
            padding: 60px 0 20px 0;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            border-bottom: 1px solid #333;
            padding-bottom: 40px;
            margin-bottom: 20px;
        }

        .footer-logo {
            color: white;
            font-weight: 800;
            font-size: 20px;
            margin-bottom: 15px;
        }

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

        .footer-links h4 {
            color: white;
            margin-bottom: 15px;
            font-size: 16px;
        }

        .footer-links ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

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

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

        .friend-links a {
            background-color: #222;
            color: #ccc;
            padding: 4px 10px;
            font-size: 12px;
            border-radius: 4px;
        }

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

        .footer-bottom {
            text-align: center;
            font-size: 12px;
        }

        /* 浮动客服入口 */
        .float-kefu {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .float-btn {
            background-color: var(--primary);
            color: var(--dark);
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 15px rgba(0,0,0,0.2);
            cursor: pointer;
            font-weight: bold;
            font-size: 12px;
            text-align: center;
            border: 2px solid var(--dark);
            transition: var(--transition);
        }

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

        .float-btn.back-top {
            background-color: var(--dark);
            color: white;
            border-color: var(--dark);
        }

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-3 {
                grid-template-columns: 1fr 1fr;
            }
            .tool-wrapper, .contact-section-wrapper {
                grid-template-columns: 1fr;
            }
            .reviews-slider {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .hero h1 {
                font-size: 32px;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: white;
                border-bottom: 2px solid var(--primary);
                padding: 20px;
                box-shadow: 0 10px 15px rgba(0,0,0,0.05);
            }
            .nav-menu.show {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
            .step-timeline {
                flex-direction: column;
                gap: 20px;
            }
            .step-timeline::before {
                display: none;
            }
            .step-node {
                width: 100%;
            }
            .case-grid {
                grid-template-columns: 1fr;
            }
            .reviews-slider {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }