:root {
            --primary: #FFDE00;
            --primary-hover: #E5C700;
            --dark: #121212;
            --dark-light: #1E1E1E;
            --light: #F9F9F9;
            --text-dark: #1A1A1A;
            --text-muted: #666666;
            --white: #FFFFFF;
            --max-width: 1200px;
            --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
        }

        * {
            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);
            color: var(--text-dark);
        }

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

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

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

        /* 头部导航 */
        header {
            background-color: var(--white);
            border-bottom: 3px solid var(--primary);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0,0,0,0.05);
        }

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

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

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

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

        .nav-btn {
            background-color: var(--dark);
            color: var(--primary);
            padding: 10px 20px;
            font-weight: bold;
            border-radius: 4px;
            border: 2px solid var(--dark);
        }

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

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

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

        /* 首屏 Hero (无图片) */
        .hero {
            background: linear-gradient(135deg, var(--dark) 0%, #222222 100%);
            color: var(--white);
            padding: 100px 0 80px;
            text-align: center;
            position: relative;
            overflow: hidden;
            border-bottom: 8px solid var(--primary);
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(circle at 80% 20%, rgba(255, 222, 0, 0.15) 0%, transparent 50%);
            pointer-events: none;
        }

        .hero-tag {
            background-color: var(--primary);
            color: var(--dark);
            padding: 6px 16px;
            font-weight: 800;
            font-size: 14px;
            border-radius: 30px;
            display: inline-block;
            margin-bottom: 20px;
            text-transform: uppercase;
            letter-spacing: 1px;
            box-shadow: 0 4px 15px rgba(255, 222, 0, 0.3);
        }

        h1.hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            color: var(--white);
        }

        h1.hero-title span {
            color: var(--primary);
            background: linear-gradient(to right, #FFF, var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 1.15rem;
            max-width: 800px;
            margin: 0 auto 40px;
            color: #CCCCCC;
            line-height: 1.8;
        }

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

        .btn-primary {
            background-color: var(--primary);
            color: var(--dark);
            padding: 16px 36px;
            font-size: 16px;
            font-weight: 800;
            border-radius: 8px;
            box-shadow: 0 8px 25px rgba(255, 222, 0, 0.4);
            border: 2px solid var(--primary);
        }

        .btn-primary:hover {
            background-color: transparent;
            color: var(--primary);
            transform: translateY(-3px);
        }

        .btn-secondary {
            background-color: transparent;
            color: var(--white);
            padding: 16px 36px;
            font-size: 16px;
            font-weight: 800;
            border-radius: 8px;
            border: 2px solid rgba(255,255,255,0.3);
        }

        .btn-secondary:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-3px);
        }

        /* 全局通用 Section */
        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border);
        }

        .section-light {
            background-color: var(--white);
        }

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

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

        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--dark);
            position: relative;
            display: inline-block;
            padding-bottom: 15px;
        }

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

        .section-yellow .section-title::after {
            background-color: var(--dark);
        }

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

        .section-yellow .section-subtitle {
            color: rgba(18,18,18,0.8);
        }

        /* 数据指标 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: -40px;
            position: relative;
            z-index: 10;
        }

        .stat-card {
            background-color: var(--white);
            border-top: 4px solid var(--primary);
            padding: 30px 20px;
            border-radius: 8px;
            text-align: center;
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
            transition: var(--transition);
        }

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

        .stat-num {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--dark);
            line-height: 1.2;
            margin-bottom: 5px;
        }

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

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

        /* 平台介绍 */
        .intro-container {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
            align-items: center;
        }

        .intro-text h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
            font-weight: 800;
        }

        .intro-text p {
            color: var(--text-muted);
            margin-bottom: 20px;
            font-size: 1.05rem;
            line-height: 1.8;
        }

        .intro-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 30px;
        }

        .intro-feat-item {
            display: flex;
            align-items: center;
            gap: 10px;
            background-color: var(--light);
            padding: 15px;
            border-radius: 6px;
            border-left: 3px solid var(--primary);
        }

        .intro-feat-item strong {
            font-size: 15px;
            color: var(--dark);
        }

        .intro-image-wrap {
            border: 4px solid var(--primary);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 15px 40px rgba(0,0,0,0.1);
        }

        /* AIGC服务 & 制作能力 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background-color: var(--white);
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 30px;
            transition: var(--transition);
            position: relative;
        }

        .service-card:hover {
            border-color: var(--primary);
            box-shadow: 0 10px 30px rgba(255, 222, 0, 0.15);
            transform: translateY(-5px);
        }

        .service-icon {
            background-color: var(--primary);
            color: var(--dark);
            width: 60px;
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            font-size: 24px;
            font-weight: 800;
            margin-bottom: 20px;
        }

        .service-card h3 {
            font-size: 1.4rem;
            margin-bottom: 15px;
            font-weight: 800;
        }

        .service-card p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.6;
        }

        /* 标签墙 (支持的AI平台) */
        .tags-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
            max-width: 1000px;
            margin: 0 auto;
        }

        .tag-item {
            background-color: var(--white);
            border: 2px solid var(--dark);
            color: var(--dark);
            padding: 8px 20px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 14px;
            transition: var(--transition);
        }

        .tag-item:hover {
            background-color: var(--primary);
            transform: scale(1.05);
        }

        /* 解决方案 & 案例 */
        .solution-tabs {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .solution-card {
            background-color: var(--white);
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            transition: var(--transition);
        }

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

        .solution-content {
            padding: 25px;
        }

        .solution-content h4 {
            font-size: 1.25rem;
            margin-bottom: 10px;
            font-weight: 800;
        }

        .solution-content p {
            color: var(--text-muted);
            font-size: 14px;
            margin-bottom: 20px;
        }

        .solution-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-top: 1px solid var(--border);
            padding-top: 15px;
            font-size: 13px;
            font-weight: 600;
        }

        /* 对比评测 - 高品质设计 */
        .review-card {
            background-color: var(--dark);
            color: var(--white);
            border-radius: 12px;
            padding: 40px;
            display: grid;
            grid-template-columns: 1fr 2fr;
            gap: 40px;
            align-items: center;
            box-shadow: 0 20px 40px rgba(0,0,0,0.15);
            margin-bottom: 50px;
        }

        .review-score-box {
            background-color: var(--primary);
            color: var(--dark);
            text-align: center;
            padding: 40px 20px;
            border-radius: 8px;
        }

        .review-score {
            font-size: 4rem;
            font-weight: 900;
            line-height: 1;
        }

        .review-star {
            color: var(--dark);
            font-size: 1.5rem;
            margin: 10px 0;
        }

        .review-table-container {
            overflow-x: auto;
        }

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

        .compare-table th, .compare-table td {
            padding: 14px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }

        .compare-table th {
            color: var(--primary);
            font-weight: 800;
        }

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

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

        .training-card {
            background-color: var(--white);
            border: 2px solid var(--border);
            border-radius: 8px;
            padding: 20px 15px;
            text-align: center;
            transition: var(--transition);
        }

        .training-card:hover {
            border-color: var(--primary);
            background-color: rgba(255, 222, 0, 0.05);
        }

        .training-card h4 {
            font-size: 14px;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 10px;
        }

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

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

        .faq-item {
            background-color: var(--white);
            margin-bottom: 15px;
            border-radius: 6px;
            border: 1px solid var(--border);
            overflow: hidden;
        }

        .faq-question {
            padding: 20px;
            font-weight: 800;
            font-size: 16px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            transition: var(--transition);
        }

        .faq-question:hover {
            background-color: rgba(255, 222, 0, 0.05);
        }

        .faq-answer {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out, padding 0.3s ease-out;
            border-top: 0 solid var(--border);
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.8;
        }

        .faq-item.active .faq-answer {
            padding: 20px;
            max-height: 200px;
            border-top: 1px solid var(--border);
        }

        .faq-icon::after {
            content: '+';
            font-size: 20px;
            font-weight: bold;
        }

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

        /* 自助排查与百科 */
        .troubleshoot-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .wiki-card, .trouble-card {
            background-color: var(--white);
            border-radius: 8px;
            padding: 30px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.02);
            border-left: 5px solid var(--primary);
        }

        .wiki-card h3, .trouble-card h3 {
            font-size: 1.5rem;
            margin-bottom: 20px;
            font-weight: 800;
        }

        .wiki-list, .trouble-list {
            list-style: none;
        }

        .wiki-list li, .trouble-list li {
            margin-bottom: 15px;
            font-size: 14px;
            line-height: 1.6;
        }

        .wiki-list li strong, .trouble-list li strong {
            color: var(--dark);
            display: block;
            margin-bottom: 4px;
        }

        /* 客户评论 */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

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

        .comment-card::before {
            content: '“';
            position: absolute;
            top: 10px;
            left: 20px;
            font-size: 4rem;
            color: rgba(255, 222, 0, 0.2);
            font-family: Georgia, serif;
            line-height: 1;
        }

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

        .comment-author {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid var(--border);
            padding-top: 15px;
        }

        .author-avatar {
            width: 40px;
            height: 40px;
            background-color: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 14px;
            color: var(--dark);
        }

        .author-info h5 {
            font-size: 14px;
            font-weight: 800;
        }

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

        /* 最新资讯 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 15px;
        }

        .news-card {
            background-color: var(--white);
            border-radius: 6px;
            border: 1px solid var(--border);
            padding: 15px;
            transition: var(--transition);
        }

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

        .news-card h4 {
            font-size: 13px;
            font-weight: 800;
            margin-bottom: 10px;
            height: 38px;
            overflow: hidden;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }

        .news-card a {
            font-size: 12px;
            color: var(--text-muted);
            text-decoration: underline;
        }

        .news-card a:hover {
            color: var(--primary-hover);
        }

        /* 预约提交 & 联系我们 */
        .contact-wrap {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
        }

        .form-box {
            background-color: var(--white);
            border: 3px solid var(--dark);
            border-radius: 8px;
            padding: 40px;
            box-shadow: 8px 8px 0px var(--primary);
        }

        .form-title {
            font-size: 1.6rem;
            font-weight: 800;
            margin-bottom: 25px;
            border-left: 5px solid var(--primary);
            padding-left: 15px;
        }

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

        .form-group label {
            display: block;
            font-weight: 700;
            font-size: 14px;
            margin-bottom: 8px;
        }

        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 2px solid var(--border);
            border-radius: 6px;
            font-size: 14px;
            transition: var(--transition);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 222, 0, 0.2);
        }

        .contact-info {
            background-color: var(--dark);
            color: var(--white);
            border-radius: 8px;
            padding: 40px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .contact-info h3 {
            font-size: 1.6rem;
            color: var(--primary);
            margin-bottom: 20px;
            font-weight: 800;
        }

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

        .contact-details li {
            margin-bottom: 20px;
            font-size: 14px;
            display: flex;
            flex-direction: column;
        }

        .contact-details li span {
            color: rgba(255,255,255,0.5);
            font-size: 12px;
            margin-bottom: 4px;
        }

        .contact-details li strong {
            font-size: 16px;
        }

        .qr-codes {
            display: flex;
            gap: 20px;
            margin-top: 30px;
        }

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

        .qr-item img {
            width: 110px;
            height: 110px;
            border: 2px solid var(--primary);
            border-radius: 4px;
            background-color: var(--white);
        }

        .qr-item p {
            font-size: 11px;
            margin-top: 5px;
            color: rgba(255,255,255,0.7);
        }

        /* 侧边浮动客服 */
        .float-contact {
            position: fixed;
            right: 20px;
            bottom: 40px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .float-item {
            width: 50px;
            height: 50px;
            background-color: var(--primary);
            color: var(--dark);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            box-shadow: 0 4px 15px rgba(0,0,0,0.15);
            cursor: pointer;
            transition: var(--transition);
            position: relative;
        }

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

        .float-item .popover {
            position: absolute;
            right: 60px;
            bottom: 0;
            background-color: var(--white);
            border: 2px solid var(--dark);
            border-radius: 8px;
            padding: 15px;
            box-shadow: 0 5px 25px rgba(0,0,0,0.15);
            display: none;
            width: 220px;
        }

        .float-item:hover .popover {
            display: block;
        }

        .popover img {
            width: 100%;
            height: auto;
            margin-bottom: 5px;
        }

        .popover p {
            color: var(--dark);
            font-size: 12px;
            text-align: center;
            margin: 0;
        }

        /* 页脚 */
        footer {
            background-color: var(--dark);
            color: var(--white);
            padding: 60px 0 20px;
            border-top: 5px solid var(--primary);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-col h4 {
            color: var(--primary);
            font-size: 16px;
            font-weight: 800;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 8px;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 30px;
            height: 2px;
            background-color: var(--primary);
        }

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

        .footer-col ul li {
            margin-bottom: 12px;
            font-size: 14px;
        }

        .footer-col ul li a {
            color: rgba(255,255,255,0.7);
        }

        .footer-col ul li a:hover {
            color: var(--primary);
            padding-left: 5px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 12px;
            color: rgba(255,255,255,0.5);
            flex-wrap: wrap;
            gap: 15px;
        }

        .footer-links a {
            color: rgba(255,255,255,0.5);
            margin-right: 15px;
        }

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

        /* 响应式媒体查询 */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .training-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .comments-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: var(--white);
                border-bottom: 3px solid var(--primary);
                padding: 20px;
                box-shadow: 0 10px 20px rgba(0,0,0,0.1);
                gap: 15px;
            }

            .nav-menu.active {
                display: flex;
            }

            .menu-toggle {
                display: flex;
            }

            h1.hero-title {
                font-size: 2rem;
            }

            .intro-container, .review-card, .contact-wrap, .troubleshoot-grid {
                grid-template-columns: 1fr;
            }

            .services-grid, .solution-tabs, .footer-grid {
                grid-template-columns: 1fr;
            }

            .training-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .comments-grid, .news-grid {
                grid-template-columns: 1fr;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }