:root {
            --primary: #2563eb;
            --primary-bright: #00f2fe;
            --accent: #7c3aed;
            --accent-bright: #4facfe;
            --text-main: #0f172a;
            --text-muted: #475569;
            --bg-light: #f8fafc;
            --bg-white: #ffffff;
            --border-color: #e2e8f0;
            --glow: 0 0 20px rgba(37, 99, 235, 0.15);
            --gradient-primary: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
            --gradient-bright: linear-gradient(90deg, #00f2fe 0%, #4facfe 100%);
        }

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

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

        /* 统一容器 */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 顶通导航 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 70px;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            display: flex;
            align-items: center;
        }

        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
        }

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

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

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

        .nav-menu a {
            text-decoration: none;
            color: var(--text-muted);
            font-weight: 500;
            font-size: 0.95rem;
            transition: color 0.3s;
        }

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

        .nav-btn {
            background: var(--gradient-primary);
            color: #fff;
            padding: 8px 20px;
            border-radius: 50px;
            text-decoration: none;
            font-size: 0.9rem;
            font-weight: 600;
            transition: transform 0.2s, box-shadow 0.2s;
            box-shadow: var(--glow);
        }

        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(37, 99, 235, 0.3);
        }

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

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

        /* 英雄首屏 - 极致鲜亮（无图片） */
        .hero {
            padding: 160px 0 100px 0;
            background: radial-gradient(circle at 80% 20%, rgba(0, 242, 254, 0.15) 0%, transparent 50%),
                        radial-gradient(circle at 10% 80%, rgba(124, 58, 237, 0.1) 0%, transparent 50%),
                        var(--bg-white);
            text-align: center;
            position: relative;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 5px;
            background: var(--gradient-bright);
        }

        h1.hero-title {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #1e3a8a 0%, #7c3aed 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-subtitle {
            font-size: 1.25rem;
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto 40px auto;
        }

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

        .btn-primary {
            background: var(--gradient-primary);
            color: #fff;
            padding: 15px 35px;
            border-radius: 50px;
            text-decoration: none;
            font-size: 1.1rem;
            font-weight: 700;
            transition: transform 0.2s, box-shadow 0.2s;
            box-shadow: 0 10px 25px rgba(37, 99, 235, 0.25);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 30px rgba(37, 99, 235, 0.4);
        }

        .btn-secondary {
            background: var(--bg-white);
            color: var(--primary);
            border: 2px solid var(--primary);
            padding: 13px 33px;
            border-radius: 50px;
            text-decoration: none;
            font-size: 1.1rem;
            font-weight: 700;
            transition: all 0.2s;
        }

        .btn-secondary:hover {
            background: rgba(37, 99, 235, 0.05);
            transform: translateY(-3px);
        }

        /* 数据指标卡片 */
        .stats-section {
            padding: 60px 0;
            background: var(--bg-white);
            margin-top: -50px;
            position: relative;
            z-index: 10;
            border-radius: 20px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.03);
            border: 1px solid var(--border-color);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 30px;
            text-align: center;
        }

        .stat-card h3 {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 5px;
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .stat-card p {
            font-size: 1rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* 通用区块样式 */
        .section {
            padding: 100px 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 60px;
        }

        .section-tag {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(37, 99, 235, 0.1);
            color: var(--primary);
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 700;
            margin-bottom: 15px;
            text-transform: uppercase;
        }

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

        .section-desc {
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
            font-size: 1.05rem;
        }

        /* 服务能力卡片 (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(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 35px;
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
        }

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

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 35px rgba(0,0,0,0.06);
            border-color: transparent;
        }

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

        .service-icon {
            width: 60px;
            height: 60px;
            border-radius: 12px;
            background: rgba(37, 99, 235, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 25px;
            font-size: 1.8rem;
            color: var(--primary);
        }

        .service-card h4 {
            font-size: 1.3rem;
            margin-bottom: 12px;
            color: var(--text-main);
        }

        .service-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 15px;
        }

        .model-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .model-tag {
            font-size: 0.75rem;
            padding: 3px 8px;
            background: var(--bg-light);
            border-radius: 4px;
            color: var(--text-muted);
            border: 1px solid var(--border-color);
        }

        /* 一站式制作场景 */
        .scenes-section {
            background: var(--bg-white);
        }

        .scenes-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

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

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

        .scene-info {
            padding: 30px;
        }

        .scene-info h4 {
            font-size: 1.3rem;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .scene-info p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* 流程步骤 */
        .steps-flow {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 30px;
            position: relative;
        }

        .step-item {
            text-align: center;
            position: relative;
        }

        .step-num {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--gradient-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.2rem;
            margin: 0 auto 20px auto;
            box-shadow: 0 5px 15px rgba(37,99,235,0.2);
        }

        .step-item h4 {
            font-size: 1.1rem;
            margin-bottom: 10px;
        }

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

        /* 对比评测表格 */
        .comparison-wrapper {
            overflow-x: auto;
            background: var(--bg-white);
            border-radius: 16px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.02);
            border: 1px solid var(--border-color);
        }

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

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

        .comparison-table th {
            background: var(--bg-light);
            font-weight: 700;
            color: var(--text-main);
        }

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

        .score-highlight {
            background: rgba(37, 99, 235, 0.05);
            font-weight: 600;
        }

        .badge-star {
            color: #f59e0b;
            font-weight: bold;
        }

        /* Token 比价 */
        .price-section {
            background: var(--bg-white);
        }

        .price-table-wrapper {
            margin-top: 30px;
            overflow-x: auto;
        }

        /* 案例展示区域 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }

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

        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 35px rgba(0,0,0,0.08);
        }

        .case-img-container {
            width: 100%;
            height: 200px;
            background: #e2e8f0;
            overflow: hidden;
            position: relative;
        }

        .case-img-container img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s;
        }

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

        .case-content {
            padding: 25px;
        }

        .case-tag {
            font-size: 0.75rem;
            color: var(--primary);
            background: rgba(37,99,235,0.08);
            padding: 3px 10px;
            border-radius: 50px;
            font-weight: 600;
            display: inline-block;
            margin-bottom: 10px;
        }

        .case-content h4 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }

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

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

        .review-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 30px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.01);
            position: relative;
        }

        .review-quote {
            font-size: 1.2rem;
            color: var(--primary);
            opacity: 0.3;
            position: absolute;
            top: 20px;
            right: 25px;
            font-family: Georgia, serif;
        }

        .review-text {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 20px;
            position: relative;
            z-index: 1;
        }

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

        .user-avatar {
            width: 45px;
            height: 45px;
            border-radius: 50%;
            background: var(--gradient-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
        }

        .user-meta h5 {
            font-size: 0.95rem;
            margin-bottom: 2px;
        }

        .user-meta span {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* 结构化表单 */
        .form-section {
            background: var(--bg-white);
        }

        .form-wrapper {
            max-width: 700px;
            margin: 0 auto;
            border: 1px solid var(--border-color);
            border-radius: 20px;
            padding: 40px;
            background: var(--bg-light);
            box-shadow: 0 10px 30px rgba(0,0,0,0.02);
        }

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

        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 8px;
            font-size: 0.95rem;
        }

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

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

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

        .submit-btn {
            width: 100%;
            border: none;
            cursor: pointer;
            text-align: center;
            background: var(--gradient-primary);
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            padding: 15px;
            border-radius: 8px;
            transition: opacity 0.3s;
        }

        .submit-btn:hover {
            opacity: 0.9;
        }

        /* FAQ 手风琴 */
        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
        }

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

        .faq-header {
            padding: 20px 25px;
            background: var(--bg-white);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            transition: background 0.3s;
        }

        .faq-header:hover {
            background: var(--bg-light);
        }

        .faq-icon {
            font-size: 1.2rem;
            transition: transform 0.3s;
        }

        .faq-content {
            padding: 0 25px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out, padding 0.3s ease-out;
            color: var(--text-muted);
            font-size: 0.95rem;
            border-top: 0px solid transparent;
        }

        .faq-item.active .faq-content {
            padding: 20px 25px;
            max-height: 200px;
            border-top: 1px solid var(--border-color);
        }

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

        /* 文章与知识库 */
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }

        .article-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 30px;
            transition: all 0.3s;
        }

        .article-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.05);
        }

        .article-title {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 15px;
        }

        .article-title a {
            text-decoration: none;
            color: var(--text-main);
            transition: color 0.2s;
        }

        .article-title a:hover {
            color: var(--primary);
        }

        .article-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

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

        /* 标签云与辅助组件 */
        .tags-cloud {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            max-width: 800px;
            margin: 40px auto 0 auto;
        }

        .cloud-tag {
            padding: 8px 16px;
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 50px;
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: all 0.2s;
        }

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

        /* 二维码与联系方式 */
        .contact-box {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            background: var(--bg-white);
            border-radius: 20px;
            padding: 50px;
            border: 1px solid var(--border-color);
        }

        .contact-info h4 {
            font-size: 1.5rem;
            margin-bottom: 20px;
        }

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

        .contact-list li {
            margin-bottom: 15px;
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1rem;
        }

        .qr-codes {
            display: flex;
            gap: 30px;
            justify-content: center;
        }

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

        .qr-item img {
            width: 130px;
            height: 130px;
            padding: 8px;
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            margin-bottom: 8px;
        }

        .qr-item p {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 600;
        }

        /* 友情链接与页脚 */
        footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 60px 0 30px 0;
            border-top: 1px solid #1e293b;
        }

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

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

        .footer-links h5 {
            color: #fff;
            font-size: 1.1rem;
            margin-bottom: 20px;
        }

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

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

        .footer-links ul li a {
            color: #94a3b8;
            text-decoration: none;
            transition: color 0.2s;
            font-size: 0.9rem;
        }

        .footer-links ul li a:hover {
            color: #fff;
        }

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

        .friend-links-title {
            color: #fff;
            font-size: 0.95rem;
            margin-bottom: 15px;
            font-weight: 600;
        }

        .friend-links-links {
            display: flex;
            flex-wrap: wrap;
            gap: 15px 25px;
        }

        .friend-links-links a {
            color: #64748b;
            text-decoration: none;
            font-size: 0.85rem;
            transition: color 0.2s;
        }

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

        .footer-bottom {
            border-top: 1px solid #1e293b;
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
            font-size: 0.85rem;
        }

        /* 浮动组件 */
        .floating-action {
            position: fixed;
            bottom: 30px;
            right: 30px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            z-index: 999;
        }

        .float-btn {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--bg-white);
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s;
            border: 1px solid var(--border-color);
            position: relative;
        }

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

        .float-btn svg {
            width: 20px;
            height: 20px;
            fill: currentColor;
        }

        .qr-popover {
            position: absolute;
            bottom: 60px;
            right: 0;
            background: #fff;
            padding: 15px;
            border-radius: 8px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.15);
            border: 1px solid var(--border-color);
            display: none;
            text-align: center;
        }

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

        .qr-popover p {
            font-size: 0.8rem;
            color: var(--text-main);
            margin-top: 5px;
        }

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

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

        @media (max-width: 768px) {
            h1.hero-title {
                font-size: 2.2rem;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: 0 10px 20px rgba(0,0,0,0.05);
            }
            .nav-menu.show {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }