:root {
            --primary: #7000ff;
            --primary-light: #8f33ff;
            --accent: #00e5ff;
            --dark: #0f172a;
            --light: #f8fafc;
            --muted: #64748b;
            --border: #e2e8f0;
            --white: #ffffff;
            --neon-pink: #ff007f;
            --gradient: linear-gradient(135deg, var(--primary), var(--accent));
            --gradient-hover: linear-gradient(135deg, var(--primary-light), var(--accent));
        }

        * {
            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;
        }

        body {
            background-color: var(--light);
            color: var(--dark);
            line-height: 1.6;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.3s ease;
        }

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

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

        /* 顶部导航 */
        header {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            border-bottom: 1px solid var(--border);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.03);
        }

        .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;
        }

        .brand-name {
            font-size: 1.25rem;
            font-weight: 800;
            background: var(--gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

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

        .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--dark);
            padding: 5px 10px;
            border-radius: 6px;
        }

        .nav-link:hover {
            color: var(--primary);
            background: rgba(112, 0, 255, 0.05);
        }

        .btn-nav {
            background: var(--gradient);
            color: var(--white);
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            box-shadow: 0 4px 15px rgba(112, 0, 255, 0.2);
        }

        .btn-nav:hover {
            opacity: 0.9;
            transform: translateY(-2px);
        }

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

        .menu-toggle span {
            width: 25px;
            height: 3px;
            background: var(--dark);
            border-radius: 3px;
            transition: 0.3s;
        }

        /* 极致鲜亮首屏 (首屏无图限制) */
        .hero-section {
            padding: 160px 0 100px 0;
            background: radial-gradient(circle at 90% 10%, rgba(0, 229, 255, 0.15) 0%, transparent 40%),
                        radial-gradient(circle at 10% 90%, rgba(112, 0, 255, 0.12) 0%, transparent 40%),
                        var(--white);
            position: relative;
            text-align: center;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            background: linear-gradient(90deg, rgba(112,0,255,0.1), rgba(0,229,255,0.1));
            border: 1px solid rgba(112, 0, 255, 0.2);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 25px;
            letter-spacing: 1px;
        }

        h1.hero-title {
            font-size: clamp(2.2rem, 5vw, 3.8rem);
            font-weight: 900;
            line-height: 1.15;
            color: var(--dark);
            margin-bottom: 25px;
            letter-spacing: -0.5px;
        }

        h1.hero-title span {
            background: var(--gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            position: relative;
        }

        .hero-subtitle {
            font-size: clamp(1.1rem, 2vw, 1.35rem);
            color: var(--muted);
            max-width: 800px;
            margin: 0 auto 40px auto;
        }

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

        .btn-primary {
            background: var(--gradient);
            color: var(--white);
            padding: 16px 36px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            box-shadow: 0 10px 25px rgba(112, 0, 255, 0.35);
            transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }

        .btn-primary:hover {
            transform: translateY(-3px) scale(1.02);
            box-shadow: 0 15px 30px rgba(112, 0, 255, 0.45);
        }

        .btn-secondary {
            background: var(--white);
            color: var(--dark);
            border: 2px solid var(--border);
            padding: 14px 34px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
        }

        .btn-secondary:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(112, 0, 255, 0.02);
        }

        /* 核心版块统一样式 */
        section {
            padding: 100px 0;
            border-bottom: 1px solid var(--border);
        }

        .section-header {
            text-align: center;
            max-width: 750px;
            margin: 0 auto 60px auto;
        }

        .section-tag {
            color: var(--primary);
            font-weight: 700;
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 10px;
            display: block;
        }

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

        .section-desc {
            color: var(--muted);
            font-size: 1.05rem;
        }

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 25px;
            margin-top: -50px;
            position: relative;
            z-index: 10;
        }

        .stat-card {
            background: var(--white);
            border-radius: 20px;
            padding: 30px;
            text-align: center;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.04);
            border: 1px solid var(--border);
            transition: all 0.3s ease;
        }

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

        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            background: var(--gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1;
            margin-bottom: 10px;
        }

        .stat-label {
            font-size: 1rem;
            font-weight: 600;
            color: var(--dark);
        }

        /* 全平台 AIGC 服务 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

        .service-card {
            background: var(--white);
            border-radius: 20px;
            padding: 40px 30px;
            border: 1px solid var(--border);
            transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
            position: relative;
            overflow: hidden;
        }

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

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 40px rgba(112, 0, 255, 0.08);
            border-color: rgba(112, 0, 255, 0.2);
        }

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

        .service-icon {
            width: 60px;
            height: 60px;
            border-radius: 16px;
            background: rgba(112, 0, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            margin-bottom: 25px;
            color: var(--primary);
        }

        .service-title {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 15px;
        }

        .service-features {
            list-style: none;
            margin-top: 15px;
        }

        .service-features li {
            font-size: 0.9rem;
            color: var(--muted);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .service-features li::before {
            content: '✓';
            color: var(--accent);
            font-weight: bold;
        }

        /* 标签云组件 (支持模型展示) */
        .tag-cloud-wrapper {
            margin-top: 50px;
            padding: 30px;
            background: rgba(255,255,255,0.7);
            border-radius: 20px;
            border: 1px solid var(--border);
            text-align: center;
        }

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

        .tag-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }

        .tag-item {
            background: var(--white);
            color: var(--dark);
            border: 1px solid var(--border);
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            transition: all 0.3s;
        }

        .tag-item:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(112,0,255,0.05);
            transform: scale(1.05);
        }

        /* 标准化流程 & 技术标准 */
        .workflow-timeline {
            position: relative;
            max-width: 900px;
            margin: 50px auto 0 auto;
        }

        .workflow-step {
            display: flex;
            gap: 30px;
            margin-bottom: 40px;
            position: relative;
        }

        .step-number {
            flex-shrink: 0;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--gradient);
            color: var(--white);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
            box-shadow: 0 4px 15px rgba(112,0,255,0.3);
        }

        .step-content {
            background: var(--white);
            padding: 25px;
            border-radius: 16px;
            border: 1px solid var(--border);
            flex-grow: 1;
        }

        .step-title {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        /* 案例中心 (图文区) */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .case-card {
            background: var(--white);
            border-radius: 20px;
            overflow: hidden;
            border: 1px solid var(--border);
            transition: all 0.3s;
        }

        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.05);
        }

        .case-image-wrapper {
            position: relative;
            aspect-ratio: 16/10;
            overflow: hidden;
            background: #eaeaea;
        }

        .case-image-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }

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

        .case-info {
            padding: 25px;
        }

        .case-category {
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 700;
            margin-bottom: 10px;
            text-transform: uppercase;
        }

        .case-title {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .case-desc {
            color: var(--muted);
            font-size: 0.95rem;
        }

        /* 对比评测表格 */
        .comparison-table-wrapper {
            overflow-x: auto;
            background: var(--white);
            border-radius: 20px;
            border: 1px solid var(--border);
            box-shadow: 0 10px 30px rgba(0,0,0,0.02);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 700px;
        }

        .comparison-table th, 
        .comparison-table td {
            padding: 20px 25px;
            border-bottom: 1px solid var(--border);
        }

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

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

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

        .badge-score {
            display: inline-block;
            background: var(--gradient);
            color: var(--white);
            padding: 4px 10px;
            border-radius: 5px;
            font-weight: bold;
        }

        /* Token 比价 */
        .token-price-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }

        .price-card {
            background: var(--white);
            border-radius: 16px;
            padding: 25px;
            border: 1px solid var(--border);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .price-name {
            font-weight: 700;
            font-size: 1.1rem;
        }

        .price-val {
            text-align: right;
        }

        .price-num {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--neon-pink);
        }

        .price-unit {
            font-size: 0.8rem;
            color: var(--muted);
        }

        /* 职业与人工智能培训 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 25px;
        }

        .training-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 30px 20px;
            text-align: center;
            transition: all 0.3s;
        }

        .training-card:hover {
            border-color: var(--primary);
            box-shadow: 0 10px 25px rgba(112,0,255,0.06);
        }

        .training-icon {
            font-size: 2.2rem;
            margin-bottom: 15px;
        }

        .training-name {
            font-weight: 700;
            font-size: 1.05rem;
            margin-bottom: 8px;
        }

        .training-cert {
            font-size: 0.8rem;
            color: var(--primary);
            background: rgba(112,0,255,0.05);
            padding: 2px 8px;
            border-radius: 4px;
            display: inline-block;
        }

        /* 用户评论 */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .comment-card {
            background: var(--white);
            border-radius: 20px;
            padding: 30px;
            border: 1px solid var(--border);
            box-shadow: 0 10px 25px rgba(0,0,0,0.02);
            position: relative;
        }

        .comment-text {
            font-style: italic;
            color: var(--dark);
            margin-bottom: 20px;
            font-size: 0.98rem;
        }

        .comment-author {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .author-avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: #e2e8f0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--primary);
        }

        .author-info h4 {
            font-size: 0.95rem;
            font-weight: 700;
        }

        .author-info p {
            font-size: 0.8rem;
            color: var(--muted);
        }

        /* FAQ 折叠面板 */
        .faq-wrapper {
            max-width: 850px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--white);
            border-radius: 12px;
            border: 1px solid var(--border);
            margin-bottom: 15px;
            overflow: hidden;
            transition: all 0.3s;
        }

        .faq-trigger {
            width: 100%;
            padding: 20px 25px;
            background: none;
            border: none;
            text-align: left;
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

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

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

        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background: #fafafb;
        }

        .faq-content-inner {
            padding: 0 25px 20px 25px;
            color: var(--muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* 需求表单与联系我们 */
        .contact-layout {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 50px;
            align-items: start;
        }

        .contact-info-panel {
            padding: 40px;
            background: var(--white);
            border-radius: 24px;
            border: 1px solid var(--border);
        }

        .contact-channel {
            margin-bottom: 25px;
        }

        .contact-channel label {
            display: block;
            font-size: 0.85rem;
            color: var(--muted);
            margin-bottom: 5px;
            text-transform: uppercase;
        }

        .contact-channel p {
            font-size: 1.1rem;
            font-weight: 700;
        }

        .qr-codes {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-top: 30px;
        }

        .qr-box {
            text-align: center;
            border: 1px solid var(--border);
            padding: 15px;
            border-radius: 12px;
        }

        .qr-box img {
            width: 100%;
            aspect-ratio: 1;
            object-fit: cover;
            border-radius: 6px;
            margin-bottom: 10px;
        }

        .qr-box span {
            font-size: 0.8rem;
            font-weight: 600;
        }

        .form-panel {
            background: var(--white);
            padding: 40px;
            border-radius: 24px;
            border: 1px solid var(--border);
            box-shadow: 0 20px 40px rgba(0,0,0,0.03);
        }

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

        .form-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);
            border-radius: 10px;
            font-size: 1rem;
            transition: all 0.3s;
            background: var(--light);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            background: var(--white);
            box-shadow: 0 0 0 3px rgba(112,0,255,0.15);
        }

        .btn-submit {
            width: 100%;
            background: var(--gradient);
            color: var(--white);
            border: none;
            padding: 14px;
            border-radius: 10px;
            font-size: 1.05rem;
            font-weight: 700;
            cursor: pointer;
            box-shadow: 0 8px 20px rgba(112,0,255,0.25);
            transition: all 0.3s;
        }

        .btn-submit:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 25px rgba(112,0,255,0.35);
        }

        /* 资讯 / 知识库 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
        }

        .news-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 25px;
            transition: all 0.3s;
        }

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

        .news-date {
            font-size: 0.8rem;
            color: var(--muted);
            margin-bottom: 10px;
            display: block;
        }

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

        .news-link {
            font-size: 0.9rem;
            color: var(--primary);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .news-link:hover {
            color: var(--primary-light);
        }

        /* 友情链接与底部 */
        footer {
            background: var(--dark);
            color: #94a3b8;
            padding: 80px 0 30px 0;
            border-top: none;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-bottom: 50px;
        }

        .footer-logo img {
            height: 40px;
            margin-bottom: 20px;
        }

        .footer-title {
            color: var(--white);
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 20px;
        }

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

        .footer-links li {
            margin-bottom: 12px;
        }

        .footer-links a {
            font-size: 0.9rem;
        }

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

        .friend-links-area {
            border-top: 1px solid #1e293b;
            padding: 30px 0;
        }

        .friend-links-title {
            color: var(--white);
            font-size: 0.9rem;
            font-weight: 700;
            margin-bottom: 15px;
        }

        .friend-links-flex {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
        }

        .friend-links-flex a {
            font-size: 0.85rem;
            color: #64748b;
        }

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

        .copyright-area {
            border-top: 1px solid #1e293b;
            padding-top: 30px;
            text-align: center;
            font-size: 0.8rem;
            color: #64748b;
        }

        .ai-page-home-link {
            color: var(--accent) !important;
            font-weight: bold;
        }

        /* 浮动客服 */
        .float-contact {
            position: fixed;
            right: 25px;
            bottom: 25px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--white);
            box-shadow: 0 4px 20px rgba(0,0,0,0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s;
            position: relative;
        }

        .float-btn:hover {
            background: var(--gradient);
            color: var(--white);
            transform: scale(1.08);
        }

        .float-btn svg {
            width: 24px;
            height: 24px;
        }

        .qr-popover {
            position: absolute;
            bottom: 60px;
            right: 0;
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.15);
            display: none;
            text-align: center;
            width: 150px;
        }

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

        .qr-popover span {
            font-size: 0.75rem;
            color: var(--dark);
            font-weight: 600;
        }

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

        /* 移动端菜单激活样式 */
        .nav-links.active {
            display: flex;
            flex-direction: column;
            position: absolute;
            top: 70px;
            left: 0;
            right: 0;
            background: var(--white);
            border-bottom: 1px solid var(--border);
            padding: 20px;
            box-shadow: 0 10px 20px rgba(0,0,0,0.05);
            z-index: 999;
        }

        /* 响应式调整 */
        @media (max-width: 992px) {
            .contact-layout {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            
            .menu-toggle {
                display: flex;
            }

            .section-title {
                font-size: 1.8rem;
            }
        }