/* CSS reset & variables */
        :root {
            --primary: #6366f1; /* 活力靛蓝 */
            --primary-grad: linear-gradient(135deg, #6366f1 0%, #06b6d4 100%);
            --secondary: #06b6d4; /* 亮青色 */
            --accent: #10b981; /* 翠绿 */
            --dark: #0f172a;
            --gray-dark: #334155;
            --gray-light: #f8fafc;
            --gray-border: #e2e8f0;
            --white: #ffffff;
            --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

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

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

        /* 统一容器最大宽度 */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 按钮通用样式 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            cursor: pointer;
            border: none;
            outline: none;
        }

        .btn-primary {
            background: var(--primary-grad);
            color: var(--white);
            box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
        }

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

        .btn-outline:hover {
            background: var(--primary-grad);
            color: var(--white);
            border-color: transparent;
            transform: translateY(-2px);
        }

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

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

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

        .logo-area img {
            height: 40px;
            width: auto;
        }

        .logo-text {
            font-size: 1.25rem;
            font-weight: 700;
            background: var(--primary-grad);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 20px;
            list-style: none;
        }

        .nav-links a {
            font-size: 0.9rem;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: 6px;
        }

        .nav-links a:hover {
            color: var(--primary);
            background: rgba(99, 102, 241, 0.05);
        }

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

        .menu-toggle span {
            width: 25px;
            height: 3px;
            background-color: var(--dark);
            border-radius: 2px;
            transition: var(--transition);
        }

        /* Hero首屏 - 活力渐变，无背景图，科技感 */
        .hero {
            padding: 160px 0 100px;
            background: radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.08) 0%, rgba(6, 182, 212, 0.05) 90.2%);
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        /* 几何装饰块代替图片 */
        .hero::before, .hero::after {
            content: '';
            position: absolute;
            border-radius: 50%;
            filter: blur(80px);
            z-index: 1;
        }

        .hero::before {
            width: 300px;
            height: 300px;
            background: rgba(99, 102, 241, 0.2);
            top: -50px;
            left: -50px;
        }

        .hero::after {
            width: 400px;
            height: 400px;
            background: rgba(6, 182, 212, 0.15);
            bottom: -100px;
            right: -50px;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 900px;
            margin: 0 auto;
        }

        .hero h1 {
            font-size: 3rem;
            line-height: 1.25;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 24px;
        }

        .hero h1 span {
            background: var(--primary-grad);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 1.2rem;
            color: var(--gray-dark);
            margin-bottom: 40px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-btns {
            display: flex;
            gap: 16px;
            justify-content: center;
            margin-bottom: 60px;
        }

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

        .stat-card {
            background: var(--white);
            border: 1px solid var(--gray-border);
            padding: 24px;
            border-radius: 16px;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
            text-align: center;
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.05);
        }

        .stat-card h3 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .stat-card p {
            font-size: 0.95rem;
            color: var(--gray-dark);
            font-weight: 500;
        }

        /* 通用栏目容器 */
        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--gray-border);
        }

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

        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 16px;
        }

        .section-header p {
            font-size: 1.05rem;
            color: var(--gray-dark);
        }

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

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

        .about-text p {
            margin-bottom: 16px;
            font-size: 1rem;
        }

        .about-features {
            list-style: none;
            margin-top: 24px;
        }

        .about-features li {
            position: relative;
            padding-left: 28px;
            margin-bottom: 12px;
            font-weight: 500;
        }

        .about-features li::before {
            content: "✓";
            position: absolute;
            left: 0;
            top: 0;
            color: var(--accent);
            font-weight: 700;
            font-size: 1.1rem;
        }

        .about-showcase {
            background: var(--white);
            padding: 40px;
            border-radius: 24px;
            border: 1px solid var(--gray-border);
            box-shadow: 0 10px 30px rgba(0,0,0,0.03);
            text-align: center;
        }

        .showcase-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(99, 102, 241, 0.1);
            color: var(--primary);
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 20px;
        }

        /* 模型聚合标签云样式 */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-top: 20px;
        }

        .tag-item {
            background: var(--gray-light);
            border: 1px solid var(--gray-border);
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 0.85rem;
            font-weight: 500;
            transition: var(--transition);
        }

        .tag-item:hover {
            background: var(--primary);
            color: var(--white);
            border-color: transparent;
            transform: translateY(-2px);
        }

        /* 核心服务与解决方案卡片 */
        .card-grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background: var(--white);
            border: 1px solid var(--gray-border);
            padding: 36px 30px;
            border-radius: 20px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.05);
            border-color: var(--primary);
        }

        .service-icon {
            width: 50px;
            height: 50px;
            background: rgba(99, 102, 241, 0.1);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.5rem;
            margin-bottom: 24px;
        }

        .service-card h3 {
            font-size: 1.3rem;
            margin-bottom: 14px;
            color: var(--dark);
        }

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

        /* 一站式AIGC制作工作流 */
        .flow-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .flow-step {
            background: var(--white);
            padding: 30px 24px;
            border-radius: 16px;
            border: 1px solid var(--gray-border);
            text-align: center;
            position: relative;
        }

        .step-num {
            width: 36px;
            height: 36px;
            background: var(--primary-grad);
            color: var(--white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            margin: 0 auto 20px;
        }

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

        /* 培训版块 */
        .training-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .certificate-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .cert-card {
            background: var(--white);
            border: 1px solid var(--gray-border);
            padding: 20px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            gap: 16px;
            transition: var(--transition);
        }

        .cert-card:hover {
            transform: translateX(5px);
            border-color: var(--secondary);
        }

        .cert-icon {
            min-width: 48px;
            height: 48px;
            background: rgba(6, 182, 212, 0.1);
            color: var(--secondary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
        }

        /* 案例展示 - 含特定图片资源要求 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .case-card {
            background: var(--white);
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--gray-border);
            transition: var(--transition);
        }

        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 24px rgba(0,0,0,0.06);
        }

        .case-img-wrapper {
            width: 100%;
            height: 200px;
            overflow: hidden;
            background: #eee;
        }

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

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

        .case-info {
            padding: 24px;
        }

        .case-tag {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 8px;
            display: inline-block;
        }

        .case-info h3 {
            font-size: 1.15rem;
            margin-bottom: 10px;
            color: var(--dark);
        }

        /* 对比评测表格样式 */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            background: var(--white);
            border-radius: 16px;
            border: 1px solid var(--gray-border);
            box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05);
        }

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

        .compare-table th, .compare-table td {
            padding: 18px 24px;
            border-bottom: 1px solid var(--gray-border);
        }

        .compare-table th {
            background-color: var(--gray-light);
            font-weight: 700;
            color: var(--dark);
        }

        .compare-table tbody tr:hover {
            background-color: rgba(99, 102, 241, 0.02);
        }

        .compare-highlight {
            background-color: rgba(99, 102, 241, 0.04);
            font-weight: 600;
            color: var(--primary);
        }

        .score-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
            color: var(--white);
            padding: 8px 16px;
            border-radius: 50px;
            font-weight: 700;
            margin-bottom: 15px;
        }

        /* Token 比价参考 */
        .token-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .token-item {
            background: var(--white);
            border: 1px solid var(--gray-border);
            padding: 24px;
            border-radius: 12px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .token-name {
            font-weight: 700;
            color: var(--dark);
        }

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

        .token-price-original {
            text-decoration: line-through;
            color: #94a3b8;
            font-size: 0.85rem;
        }

        .token-price-now {
            color: var(--accent);
            font-weight: 700;
            font-size: 1.15rem;
        }

        /* FAQ折叠面板样式 */
        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: var(--white);
            border: 1px solid var(--gray-border);
            border-radius: 12px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-header {
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            user-select: none;
            font-weight: 600;
            color: var(--dark);
        }

        .faq-header::after {
            content: '+';
            font-size: 1.5rem;
            font-weight: 300;
            transition: var(--transition);
        }

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

        .faq-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background-color: var(--gray-light);
        }

        .faq-content {
            padding: 20px 24px;
            font-size: 0.95rem;
            color: var(--gray-dark);
            border-top: 1px solid var(--gray-border);
        }

        /* 用户评论区 */
        .review-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .review-card {
            background: var(--white);
            border: 1px solid var(--gray-border);
            padding: 30px;
            border-radius: 20px;
            position: relative;
        }

        .review-text {
            font-style: italic;
            margin-bottom: 20px;
            font-size: 0.95rem;
        }

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

        .review-user-info h4 {
            font-size: 0.95rem;
            color: var(--dark);
        }

        .review-user-info span {
            font-size: 0.8rem;
            color: #94a3b8;
        }

        /* 智能自排查及百科 */
        .help-toolbox {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .toolbox-section {
            background: var(--white);
            border: 1px solid var(--gray-border);
            padding: 30px;
            border-radius: 20px;
        }

        .toolbox-section h3 {
            margin-bottom: 20px;
            font-size: 1.3rem;
            border-bottom: 2px solid var(--primary);
            padding-bottom: 8px;
            display: inline-block;
        }

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

        .trouble-list li {
            padding: 12px 0;
            border-bottom: 1px solid var(--gray-border);
            cursor: pointer;
            transition: var(--transition);
        }

        .trouble-list li:hover {
            color: var(--primary);
            padding-left: 5px;
        }

        /* 行业资讯 / 知识库 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .news-card {
            background: var(--white);
            border: 1px solid var(--gray-border);
            border-radius: 16px;
            overflow: hidden;
            transition: var(--transition);
        }

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

        .news-content {
            padding: 24px;
        }

        .news-date {
            font-size: 0.8rem;
            color: #94a3b8;
            margin-bottom: 10px;
            display: block;
        }

        .news-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 12px;
            line-height: 1.4;
        }

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

        /* 需求匹配表单与联系我们 */
        .contact-section {
            background: radial-gradient(circle at 90% 10%, rgba(6, 182, 212, 0.05) 0%, rgba(99, 102, 241, 0.05) 100%);
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 50px;
        }

        .form-wrapper {
            background: var(--white);
            padding: 40px;
            border-radius: 24px;
            border: 1px solid var(--gray-border);
            box-shadow: 0 10px 30px rgba(0,0,0,0.03);
        }

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

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

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

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
        }

        textarea.form-control {
            resize: vertical;
            min-height: 120px;
        }

        .contact-info-panel {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }

        .info-card {
            background: var(--white);
            padding: 24px;
            border-radius: 16px;
            border: 1px solid var(--gray-border);
        }

        .info-card h4 {
            font-size: 1.1rem;
            margin-bottom: 12px;
            color: var(--dark);
            border-left: 4px solid var(--primary);
            padding-left: 10px;
        }

        .qrcode-area {
            display: flex;
            align-items: center;
            gap: 20px;
            margin-top: 15px;
        }

        .qrcode-area img {
            width: 100px;
            height: 100px;
            border-radius: 8px;
            border: 1px solid var(--gray-border);
        }

        /* 友情链接与页脚 */
        footer {
            background-color: var(--dark);
            color: #94a3b8;
            padding: 60px 0 30px;
            border-top: 1px solid rgba(255,255,255,0.1);
        }

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

        .footer-logo img {
            height: 36px;
            margin-bottom: 16px;
        }

        .footer-col h4 {
            color: var(--white);
            font-size: 1.05rem;
            margin-bottom: 20px;
            position: relative;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

        .friend-links-area {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 24px;
            margin-top: 20px;
        }

        .friend-links-area a {
            display: inline-block;
            margin-right: 15px;
            margin-bottom: 8px;
            font-size: 0.85rem;
        }

        .copyright-area {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
        }

        /* 悬浮客服面板 */
        .floating-kefu {
            position: fixed;
            right: 24px;
            bottom: 24px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .kefu-btn {
            width: 50px;
            height: 50px;
            background: var(--primary-grad);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            box-shadow: 0 4px 15px rgba(0,0,0,0.15);
            cursor: pointer;
            position: relative;
            transition: var(--transition);
        }

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

        .kefu-popover {
            position: absolute;
            right: 60px;
            bottom: 0;
            background: var(--white);
            border: 1px solid var(--gray-border);
            padding: 16px;
            border-radius: 12px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            display: none;
            width: 220px;
            text-align: center;
            color: var(--dark);
        }

        .kefu-popover img {
            width: 120px;
            height: 120px;
            margin: 10px auto;
            display: block;
        }

        .kefu-btn:hover .kefu-popover {
            display: block;
        }

        /* 响应式适配 */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .card-grid-3, .review-grid, .case-grid, .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .flow-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .about-grid, .contact-grid, .help-toolbox, .training-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: var(--white);
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--gray-border);
                box-shadow: 0 4px 6px rgba(0,0,0,0.05);
            }

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

            .menu-toggle {
                display: flex;
            }

            .hero h1 {
                font-size: 2.2rem;
            }

            .stats-grid, .card-grid-3, .review-grid, .case-grid, .flow-steps, .news-grid, .token-list {
                grid-template-columns: 1fr;
            }
            
            .hero-btns {
                flex-direction: column;
                align-items: center;
            }
            
            .hero-btns .btn {
                width: 100%;
                max-width: 300px;
            }
        }