:root {
            --bg-primary: #f8fafc;
            --bg-card: #ffffff;
            --text-primary: #0f172a;
            --text-secondary: #475569;
            --neon-blue: #00f0ff;
            --neon-pink: #ff007a;
            --neon-purple: #9d4edd;
            --border-color: #e2e8f0;
            --shadow-neon: 0 4px 20px rgba(0, 240, 255, 0.15);
            --gradient-neon: linear-gradient(135deg, #00f0ff, #9d4edd, #ff007a);
        }

        * {
            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(--bg-primary);
            color: var(--text-primary);
            overflow-x: hidden;
        }

        body {
            line-height: 1.6;
        }

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

        /* 顶部导航 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            transition: all 0.3s ease;
        }

        .nav-container {
            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: 1.25rem;
            font-weight: 800;
            background: linear-gradient(135deg, #9d4edd, #ff007a);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        nav {
            display: flex;
            gap: 20px;
        }

        nav a {
            text-decoration: none;
            color: var(--text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
            transition: color 0.3s;
        }

        nav a:hover {
            color: var(--neon-pink);
        }

        .nav-btn {
            background: var(--gradient-neon);
            color: white;
            padding: 8px 20px;
            border-radius: 30px;
            font-weight: 600;
            box-shadow: var(--shadow-neon);
            border: none;
            cursor: pointer;
            transition: transform 0.2s, box-shadow 0.2s;
            text-decoration: none;
            display: inline-block;
        }

        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 25px rgba(255, 0, 122, 0.3);
            color: white;
        }

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

        .menu-toggle span {
            display: block;
            width: 25px;
            height: 3px;
            background-color: var(--text-primary);
            border-radius: 3px;
        }

        /* Hero首屏 - 霓虹亮彩但无图片 */
        .hero {
            padding: 160px 0 100px;
            background: radial-gradient(circle at 80% 20%, rgba(0, 240, 255, 0.08) 0%, transparent 50%),
                        radial-gradient(circle at 10% 80%, rgba(255, 0, 122, 0.08) 0%, transparent 50%);
            text-align: center;
            border-bottom: 1px solid var(--border-color);
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 50px;
            background: rgba(0, 240, 255, 0.1);
            color: var(--neon-purple);
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 25px;
            border: 1px solid rgba(157, 78, 221, 0.3);
        }

        h1 {
            font-size: 3rem;
            line-height: 1.2;
            margin-bottom: 20px;
            font-weight: 800;
            letter-spacing: -0.5px;
        }

        h1 span {
            background: var(--gradient-neon);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 700px;
            margin: 0 auto 40px;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-bottom: 60px;
        }

        .btn-primary {
            background: var(--gradient-neon);
            color: #fff;
            padding: 15px 35px;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 700;
            text-decoration: none;
            box-shadow: var(--shadow-neon);
            transition: transform 0.2s, box-shadow 0.2s;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(0, 240, 255, 0.4);
        }

        .btn-secondary {
            background: #fff;
            color: var(--text-primary);
            padding: 15px 35px;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 700;
            text-decoration: none;
            border: 2px solid var(--border-color);
            transition: all 0.2s;
        }

        .btn-secondary:hover {
            border-color: var(--neon-blue);
            background: rgba(0, 240, 255, 0.05);
        }

        /* 核心数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 30px 20px;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.02);
            transition: transform 0.3s, box-shadow 0.3s;
            position: relative;
            overflow: hidden;
        }

        .stat-card::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: var(--gradient-neon);
            opacity: 0;
            transition: opacity 0.3s;
        }

        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-neon);
        }

        .stat-card:hover::after {
            opacity: 1;
        }

        .stat-num {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(135deg, #00f0ff, #9d4edd);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 5px;
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
            font-weight: 500;
        }

        /* Section基础样式 */
        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
        }

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

        .section-title h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }

        .section-title h2::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background: var(--gradient-neon);
            border-radius: 2px;
        }

        .section-title p {
            color: var(--text-secondary);
            font-size: 1.1rem;
            max-width: 600px;
            margin: 0 auto;
        }

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

        .about-text h3 {
            font-size: 1.6rem;
            margin-bottom: 15px;
            color: var(--text-primary);
        }

        .about-text p {
            color: var(--text-secondary);
            margin-bottom: 20px;
            font-size: 1rem;
        }

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

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

        .about-features li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--neon-blue);
            font-weight: bold;
        }

        .about-img-container {
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--shadow-neon);
            border: 2px solid var(--border-color);
        }

        /* 全平台AIGC服务体系 */
        .service-tabs-wrapper {
            margin-bottom: 40px;
        }

        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .service-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 30px;
            border-radius: 16px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.01);
            transition: all 0.3s ease;
        }

        .service-card:hover {
            transform: translateY(-5px);
            border-color: var(--neon-pink);
            box-shadow: 0 10px 25px rgba(255, 0, 122, 0.1);
        }

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

        .service-card h3 {
            font-size: 1.25rem;
            margin-bottom: 12px;
            font-weight: 700;
        }

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

        /* 支持模型标签云 */
        .model-cloud-wrapper {
            margin-top: 50px;
            background: #ffffff;
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            text-align: center;
        }

        .model-cloud-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--text-primary);
        }

        .model-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }

        .model-tag {
            padding: 8px 16px;
            background: #f1f5f9;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-secondary);
            transition: all 0.2s;
            border: 1px solid transparent;
        }

        .model-tag:hover {
            background: rgba(0, 240, 255, 0.08);
            color: var(--neon-blue);
            border-color: rgba(0, 240, 255, 0.3);
            transform: scale(1.05);
        }

        /* 制作流程 / 步骤 */
        .timeline {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .timeline-step {
            background: var(--bg-card);
            padding: 30px 20px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            position: relative;
            text-align: center;
        }

        .step-number {
            width: 40px;
            height: 40px;
            background: var(--gradient-neon);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            margin: 0 auto 20px;
        }

        .timeline-step h3 {
            font-size: 1.15rem;
            margin-bottom: 10px;
        }

        .timeline-step p {
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        /* 解决方案 (含有方版素材图) */
        .solutions-grid {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 50px;
            align-items: center;
        }

        .sol-img-container {
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--shadow-neon);
            border: 2px solid var(--border-color);
        }

        .sol-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .sol-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 25px;
            border-radius: 12px;
            transition: border 0.3s;
        }

        .sol-item:hover {
            border-color: var(--neon-purple);
        }

        .sol-item h4 {
            font-size: 1.1rem;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .sol-item p {
            font-size: 0.85rem;
            color: var(--text-secondary);
        }

        /* 对比评测表格 */
        .comparison-table-wrapper {
            overflow-x: auto;
            background: #ffffff;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 15px rgba(0,0,0,0.02);
        }

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

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

        th {
            background-color: #f8fafc;
            color: var(--text-primary);
            font-weight: 700;
        }

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

        .highlight-col {
            background-color: rgba(0, 240, 255, 0.02);
            border-left: 2px solid var(--neon-blue);
            border-right: 2px solid var(--neon-blue);
        }

        .rating-badge {
            background: var(--gradient-neon);
            color: white;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: 700;
        }

        /* 客户案例中心 (含横版素材图) */
        .case-gallery {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            margin-bottom: 50px;
        }

        .case-card {
            background: var(--bg-card);
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: transform 0.3s;
        }

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

        .case-img-wrap {
            height: 250px;
            overflow: hidden;
            border-bottom: 1px solid var(--border-color);
        }

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

        .case-info {
            padding: 25px;
        }

        .case-info h3 {
            font-size: 1.25rem;
            margin-bottom: 10px;
        }

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

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

        .review-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            padding: 25px;
            border-radius: 16px;
            box-shadow: 0 4px 10px rgba(0,0,0,0.01);
            position: relative;
        }

        .review-text {
            font-style: italic;
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: 20px;
        }

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

        .avatar-placeholder {
            width: 40px;
            height: 40px;
            background: var(--gradient-neon);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: 700;
            font-size: 0.9rem;
        }

        .user-info h4 {
            font-size: 0.95rem;
            margin-bottom: 2px;
        }

        .user-info p {
            font-size: 0.75rem;
            color: var(--text-secondary);
        }

        /* Token比价与技术培训 */
        .split-sections {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .info-panel {
            background: #ffffff;
            border: 1px solid var(--border-color);
            padding: 35px;
            border-radius: 16px;
        }

        .info-panel h3 {
            font-size: 1.4rem;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .price-list, .course-list {
            list-style: none;
        }

        .price-list li, .course-list li {
            display: flex;
            justify-content: space-between;
            padding: 12px 0;
            border-bottom: 1px solid #f1f5f9;
        }

        .price-list li:last-child, .course-list li:last-child {
            border-bottom: none;
        }

        .price-label, .course-label {
            font-weight: 600;
        }

        .price-val {
            color: var(--neon-pink);
            font-weight: 700;
        }

        .course-badge {
            background: rgba(157, 78, 221, 0.1);
            color: var(--neon-purple);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.75rem;
            font-weight: 600;
        }

        /* 需求匹配与联系我们 (表单) */
        .contact-section-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
        }

        .contact-info-area {
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .contact-card-box {
            background: #ffffff;
            border: 1px solid var(--border-color);
            padding: 30px;
            border-radius: 16px;
            margin-bottom: 25px;
        }

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

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

        form {
            background: #ffffff;
            border: 1px solid var(--border-color);
            padding: 40px;
            border-radius: 16px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.02);
        }

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

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            font-size: 0.9rem;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 0.95rem;
            transition: border-color 0.3s;
        }

        .form-control:focus {
            outline: none;
            border-color: var(--neon-blue);
        }

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

        .btn-submit {
            width: 100%;
            padding: 14px;
            border: none;
            background: var(--gradient-neon);
            color: white;
            font-size: 1rem;
            font-weight: 700;
            border-radius: 8px;
            cursor: pointer;
            box-shadow: var(--shadow-neon);
            transition: transform 0.2s;
        }

        .btn-submit:hover {
            transform: translateY(-2px);
        }

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

        .faq-item {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: all 0.3s;
        }

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

        .faq-question::after {
            content: '+';
            font-size: 1.5rem;
            color: var(--neon-pink);
            transition: transform 0.3s;
        }

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

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

        .faq-answer-inner {
            padding: 20px;
            border-top: 1px solid var(--border-color);
            color: var(--text-secondary);
            font-size: 0.95rem;
        }

        /* 行业资讯 / 知识库 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .news-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 25px;
            transition: all 0.3s;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

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

        .news-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 15px;
            line-height: 1.4;
        }

        .news-link {
            color: var(--neon-purple);
            text-decoration: none;
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .news-link:hover {
            color: var(--neon-pink);
        }

        /* 术语百科 & 技术标准 */
        .百科-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 15px;
            margin-top: 30px;
        }

        .百科-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            padding: 20px;
            border-radius: 8px;
        }

        .百科-card h4 {
            font-size: 1rem;
            margin-bottom: 8px;
            color: var(--neon-blue);
        }

        .百科-card p {
            font-size: 0.8rem;
            color: var(--text-secondary);
        }

        /* 页脚 */
        footer {
            background-color: #0f172a;
            color: #94a3b8;
            padding: 60px 0 30px;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-logo-area img {
            height: 45px;
            margin-bottom: 15px;
            filter: brightness(0) invert(1);
        }

        .footer-title {
            color: #ffffff;
            font-weight: 700;
            margin-bottom: 20px;
            font-size: 1.1rem;
        }

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

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

        .footer-links a {
            color: #94a3b8;
            text-decoration: none;
            transition: color 0.3s;
        }

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

        .footer-bottom {
            border-top: 1px solid #334155;
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
        }

        .friend-links a {
            color: #64748b;
            text-decoration: none;
            margin-right: 15px;
            font-size: 0.8rem;
        }

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

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

        .float-btn {
            width: 50px;
            height: 50px;
            background: #ffffff;
            border-radius: 50%;
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            position: relative;
            border: 1px solid var(--border-color);
        }

        .float-btn svg {
            width: 24px;
            height: 24px;
            fill: var(--text-primary);
        }

        .float-btn:hover {
            background: var(--gradient-neon);
        }

        .float-btn:hover svg {
            fill: #ffffff;
        }

        .float-qr-pop {
            display: none;
            position: absolute;
            bottom: 60px;
            right: 0;
            background: #ffffff;
            padding: 15px;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.15);
            border: 1px solid var(--border-color);
            text-align: center;
            width: 150px;
        }

        .float-qr-pop img {
            width: 120px;
            height: 120px;
            margin-bottom: 8px;
        }

        .float-qr-pop p {
            font-size: 0.75rem;
            color: var(--text-primary);
            font-weight: 700;
        }

        .float-btn:hover .float-qr-pop {
            display: block;
        }

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .about-grid, .solutions-grid, .split-sections, .contact-section-grid {
                grid-template-columns: 1fr;
            }
            .reviews-grid, .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .百科-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .timeline {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            h1 {
                font-size: 2.2rem;
            }
            nav {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: #ffffff;
                border-bottom: 1px solid var(--border-color);
                padding: 20px;
                gap: 15px;
            }
            nav.active {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
            .case-gallery {
                grid-template-columns: 1fr;
            }
            .reviews-grid, .news-grid, .百科-grid, .timeline {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .hero-btns {
                flex-direction: column;
                align-items: center;
            }
        }