/* 极致鲜亮风 - 全局基础样式 */
        :root {
            --primary: #4f46e5;
            --primary-light: #6366f1;
            --primary-dark: #3730a3;
            --accent: #0284c7;
            --accent-light: #38bdf8;
            --vibrant-gradient: linear-gradient(135deg, #4f46e5 0%, #0284c7 50%, #d946ef 100%);
            --vibrant-bg: linear-gradient(180deg, #f8fafc 0%, #edf2fe 50%, #f1f5f9 100%);
            --card-bg: #ffffff;
            --text-main: #0f172a;
            --text-muted: #475569;
            --text-light: #64748b;
            --border-color: #e2e8f0;
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 6px;
            --shadow-sm: 0 2px 8px rgba(79, 70, 229, 0.06);
            --shadow-md: 0 8px 24px rgba(79, 70, 229, 0.12);
            --shadow-hover: 0 16px 32px rgba(79, 70, 229, 0.18);
        }

        * {
            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: #f8fafc;
            color: var(--text-main);
            line-height: 1.6;
        }

        body {
            background: var(--vibrant-bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: all 0.25s ease;
        }

        a:hover {
            color: var(--primary-light);
        }

        /* 布局主容器统一标准 */
        .container {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }

        section {
            padding: 80px 0;
            position: relative;
        }

        /* 标题统一控制 */
        .section-header {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 50px auto;
        }

        .section-tag {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(79, 70, 229, 0.1);
            color: var(--primary);
            font-weight: 700;
            font-size: 14px;
            border-radius: 50px;
            margin-bottom: 12px;
            letter-spacing: 1px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
        }

        /* 顶部导航 */
        .header-nav {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 4px 20px rgba(0,0,0,0.03);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
        }

        .brand-logo-area {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .ai-page-logo {
            height: 42px;
            width: auto;
            display: block;
        }

        /* 要求：.nav-links 的 gap 属性设置为 0 */
        .nav-links {
            display: flex;
            align-items: center;
            gap: 0;
            list-style: none;
        }

        .nav-links li a {
            display: block;
            padding: 8px 14px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            border-radius: var(--radius-sm);
        }

        .nav-links li a:hover {
            color: var(--primary);
            background: rgba(79, 70, 229, 0.06);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 24px;
            font-size: 15px;
            font-weight: 700;
            border-radius: 50px;
            cursor: pointer;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            border: none;
            outline: none;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--vibrant-gradient);
            color: #ffffff !important;
            box-shadow: 0 4px 16px rgba(79, 70, 229, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(79, 70, 229, 0.45);
        }

        .btn-outline {
            background: #ffffff;
            color: var(--primary) !important;
            border: 2px solid var(--primary);
        }

        .btn-outline:hover {
            background: rgba(79, 70, 229, 0.05);
            transform: translateY(-2px);
        }

        /* 移动端菜单按钮 */
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--text-main);
            cursor: pointer;
        }

        /* 1. Hero 首屏 - 严格限制：不能有图片！ */
        .hero-section {
            padding: 100px 0 80px 0;
            background: linear-gradient(135deg, #ffffff 0%, #eef2ff 50%, #e0f2fe 100%);
            text-align: center;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--border-color);
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 20px;
            background: #ffffff;
            border: 1px solid rgba(79, 70, 229, 0.2);
            box-shadow: var(--shadow-sm);
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 24px;
        }

        .hero-h1 {
            font-size: 42px;
            font-weight: 900;
            color: #0f172a;
            line-height: 1.25;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }

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

        .hero-subtitle {
            font-size: 19px;
            color: var(--text-muted);
            max-width: 860px;
            margin: 0 auto 36px auto;
            line-height: 1.7;
        }

        .hero-cta-group {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            margin-bottom: 60px;
            flex-wrap: wrap;
        }

        .hero-stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .stat-card {
            background: rgba(255, 255, 255, 0.85);
            border: 1px solid var(--border-color);
            padding: 24px 16px;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            transition: transform 0.3s ease;
        }

        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }

        .stat-number {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 4px;
        }

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

        /* 2. 关于我们与平台介绍 */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .about-card-box {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 36px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
        }

        .about-card-box h3 {
            font-size: 22px;
            margin-bottom: 16px;
            color: var(--text-main);
        }

        .model-pill-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 20px;
        }

        .model-pill {
            padding: 6px 12px;
            background: #f1f5f9;
            border: 1px solid #cbd5e1;
            border-radius: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-main);
        }

        /* 3. AIGC服务 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .service-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-sm);
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }

        .service-icon-box {
            width: 52px;
            height: 52px;
            background: rgba(79, 70, 229, 0.1);
            color: var(--primary);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            font-weight: bold;
            margin-bottom: 16px;
        }

        .service-title {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-main);
        }

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

        /* 4. 一站式制作与横版素材 */
        .showcase-block {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-md);
            margin-bottom: 30px;
            border: 1px solid var(--border-color);
        }

        .img-container-landscape {
            width: 100%;
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-top: 16px;
        }

        .img-container-landscape img {
            width: 100%;
            height: auto;
            display: block;
            object-fit: cover;
        }

        /* 5. 行业方案与多图展示 */
        .banner-flex {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
            margin-top: 30px;
        }

        .banner-item {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }

        .ai-page-image {
            width: 100%;
            height: auto;
            display: block;
        }

        /* 6. 服务网络 */
        .network-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .network-card {
            background: var(--card-bg);
            padding: 24px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            text-align: center;
        }

        .network-card h4 {
            font-size: 18px;
            color: var(--primary);
            margin-bottom: 8px;
        }

        /* 7. 标准流程 */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            position: relative;
        }

        .step-card {
            background: var(--card-bg);
            padding: 24px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            position: relative;
        }

        .step-num {
            font-size: 36px;
            font-weight: 900;
            color: rgba(79, 70, 229, 0.2);
            position: absolute;
            top: 10px;
            right: 15px;
        }

        /* 8. 案例中心与方版素材 */
        .case-grid {
            display: grid;
            grid-template-columns: 1fr 2fr;
            gap: 30px;
            align-items: center;
            background: var(--card-bg);
            padding: 30px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
        }

        /* 9. 对比评测 - 必须满五星与9.9分 */
        .rating-box {
            background: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%);
            color: #ffffff;
            border-radius: var(--radius-lg);
            padding: 30px;
            text-align: center;
            margin-bottom: 40px;
            box-shadow: var(--shadow-md);
        }

        .rating-stars {
            color: #f59e0b;
            font-size: 28px;
            margin-bottom: 8px;
        }

        .rating-score {
            font-size: 48px;
            font-weight: 900;
            color: #38bdf8;
            line-height: 1;
        }

        .comp-table-wrapper {
            overflow-x: auto;
        }

        .comp-table {
            width: 100%;
            border-collapse: collapse;
            background: var(--card-bg);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .comp-table th, .comp-table td {
            padding: 16px 20px;
            text-align: left;
            border-bottom: 1px solid var(--border-color);
            font-size: 14px;
        }

        .comp-table th {
            background: #f1f5f9;
            font-weight: 700;
            color: var(--text-main);
        }

        .comp-highlight {
            background: rgba(79, 70, 229, 0.05);
            font-weight: 700;
            color: var(--primary);
        }

        /* 10 & 11. 需求匹配与 Token比价 */
        .price-table-wrapper {
            overflow-x: auto;
            margin-top: 20px;
        }

        /* 12 & 13. FAQ 折叠面板 */
        .faq-list {
            max-width: 900px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all 0.25s ease;
        }

        .faq-header {
            padding: 20px 24px;
            font-weight: 700;
            font-size: 17px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text-main);
        }

        .faq-header:hover {
            color: var(--primary);
        }

        .faq-content {
            padding: 0 24px 20px 24px;
            color: var(--text-muted);
            font-size: 15px;
            display: none;
            line-height: 1.7;
        }

        .faq-item.active .faq-content {
            display: block;
        }

        .faq-icon {
            font-size: 18px;
            transition: transform 0.3s ease;
        }

        .faq-item.active .faq-icon {
            transform: rotate(180deg);
        }

        /* 14 & 15. 用户评论 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 24px;
        }

        .review-card {
            background: var(--card-bg);
            padding: 28px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

        .review-author {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 16px;
        }

        .author-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--vibrant-gradient);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
        }

        /* 16. 联系我们 & 表单 */
        .contact-box-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            background: var(--card-bg);
            padding: 40px;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
        }

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

        .form-group label {
            display: block;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-main);
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            font-size: 15px;
            outline: none;
            transition: border-color 0.25s ease;
        }

        .form-control:focus {
            border-color: var(--primary);
        }

        textarea.form-control {
            resize: vertical;
            min-height: 110px;
        }

        /* 17. 页脚与友情链接 */
        .site-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-brand h3 {
            color: #ffffff;
            font-size: 20px;
            margin-bottom: 12px;
        }

        .footer-links-title {
            color: #ffffff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .friend-links-box {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 16px;
        }

        .friend-links-box a {
            color: #cbd5e1;
            font-size: 14px;
        }

        .friend-links-box a:hover {
            color: #38bdf8;
        }

        .copyright-bar {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid #1e293b;
            font-size: 14px;
            color: #64748b;
        }

        /* 浮动客服 */
        .floating-kefu {
            position: fixed;
            right: 24px;
            bottom: 24px;
            z-index: 999;
            background: #ffffff;
            border-radius: 16px;
            padding: 12px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.15);
            text-align: center;
            border: 1px solid var(--border-color);
        }

        .floating-kefu img {
            width: 100px;
            height: 100px;
            display: block;
            border-radius: 8px;
            margin-bottom: 6px;
        }

        .floating-kefu p {
            font-size: 12px;
            font-weight: bold;
            color: var(--primary);
        }

        /* 响应式适配 */
        @media (max-width: 992px) {
            .hero-stats-grid, .network-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .about-grid, .case-grid, .contact-box-grid, .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .menu-toggle {
                display: block;
            }
            .hero-h1 {
                font-size: 28px;
            }
            .hero-stats-grid {
                grid-template-columns: 1fr;
            }
            .nav-links.active {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: 76px;
                left: 0;
                right: 0;
                background: #ffffff;
                padding: 20px;
                box-shadow: var(--shadow-md);
                border-bottom: 1px solid var(--border-color);
            }
        }