:root {
            --primary: #0052ff;
            --primary-light: #e6eeff;
            --secondary: #00f5d4;
            --dark: #0f172a;
            --gray-dark: #334155;
            --gray-light: #f8fafc;
            --border: #e2e8f0;
            --accent: #7c3aed;
            --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;
            scroll-behavior: smooth;
        }

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

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

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

        /* 极致鲜亮风背景修饰，但保持浅色调 */
        .section-light {
            background-color: #ffffff;
        }

        .section-gradient {
            background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
        }

        /* 头部导航 */
        header {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: var(--transition);
        }

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

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

        .ai-page-logo {
            height: 40px;
            width: auto;
            object-fit: contain;
        }

        .brand-name {
            font-size: 20px;
            font-weight: 800;
            background: linear-gradient(to right, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

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

        .nav-menu a {
            color: var(--gray-dark);
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            transition: var(--transition);
        }

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

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 20px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #ffffff;
            box-shadow: 0 4px 14px rgba(0, 82, 255, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 82, 255, 0.4);
        }

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

        .btn-outline:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
        }

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

        /* 首屏 Hero - 无图片设计，极鲜亮科技风渐变与色块 */
        .hero {
            padding: 120px 0 100px 0;
            background: radial-gradient(circle at 90% 10%, rgba(0, 245, 212, 0.15) 0%, transparent 40%),
                        radial-gradient(circle at 10% 90%, rgba(124, 58, 237, 0.1) 0%, transparent 40%),
                        linear-gradient(180deg, #ffffff 0%, var(--gray-light) 100%);
            text-align: center;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 24px;
            border: 1px solid rgba(0, 82, 255, 0.1);
        }

        .hero h1 {
            font-size: 48px;
            font-weight: 900;
            line-height: 1.2;
            color: var(--dark);
            margin-bottom: 24px;
            letter-spacing: -1px;
        }

        .hero h1 span {
            background: linear-gradient(135deg, var(--primary) 30%, var(--accent) 70%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 20px;
            color: var(--gray-dark);
            max-width: 800px;
            margin: 0 auto 40px auto;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 50px;
        }

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

        .preview-card {
            background: #ffffff;
            border: 1px solid var(--border);
            padding: 24px;
            border-radius: 12px;
            text-align: left;
            transition: var(--transition);
            box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05);
        }

        .preview-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
            box-shadow: 0 10px 20px -5px rgba(0, 82, 255, 0.15);
        }

        .preview-card .icon {
            font-size: 32px;
            margin-bottom: 12px;
        }

        .preview-card h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--dark);
        }

        .preview-card p {
            font-size: 13px;
            color: var(--gray-dark);
        }

        /* 通用标题 */
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-header h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 12px;
        }

        .section-header p {
            color: var(--gray-dark);
            font-size: 16px;
            max-width: 600px;
            margin: 0 auto;
        }

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

        .intro-text h3 {
            font-size: 24px;
            margin-bottom: 15px;
            color: var(--primary);
        }

        .intro-text p {
            margin-bottom: 20px;
            color: var(--gray-dark);
        }

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

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

        .intro-list li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--secondary);
            background: var(--dark);
            width: 20px;
            height: 20px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
            font-weight: bold;
        }

        /* 模型墙样式 */
        .model-cloud {
            background: #ffffff;
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border);
        }

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

        .model-tag {
            padding: 8px 16px;
            background: var(--gray-light);
            border: 1px solid var(--border);
            border-radius: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--gray-dark);
            transition: var(--transition);
        }

        .model-tag:hover {
            background: var(--primary);
            color: #ffffff;
            border-color: var(--primary);
            transform: scale(1.05);
        }

        /* 一站式AIGC制作 */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background: #ffffff;
            border: 1px solid var(--border);
            padding: 30px;
            border-radius: 16px;
            transition: var(--transition);
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 24px rgba(0,0,0,0.06);
            border-color: var(--primary);
        }

        /* 解决方案与服务网络 */
        .solution-tabs {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-bottom: 30px;
        }

        .tab-btn {
            background: #ffffff;
            border: 1px solid var(--border);
            padding: 15px;
            border-radius: 10px;
            text-align: center;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
        }

        .tab-btn.active, .tab-btn:hover {
            background: var(--primary);
            color: #ffffff;
            border-color: var(--primary);
        }

        .solution-content {
            background: #ffffff;
            padding: 40px;
            border-radius: 16px;
            border: 1px solid var(--border);
        }

        /* 标准化流程时间线 */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--border);
            transform: translateX(-50%);
        }

        .timeline-item {
            display: flex;
            justify-content: flex-between;
            margin-bottom: 40px;
            position: relative;
        }

        .timeline-item::after {
            content: '';
            position: absolute;
            left: 50%;
            top: 0;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--primary);
            border: 4px solid #ffffff;
            transform: translateX(-50%);
            z-index: 2;
        }

        .timeline-content {
            width: 45%;
            background: #ffffff;
            padding: 20px;
            border-radius: 10px;
            border: 1px solid var(--border);
        }

        .timeline-item:nth-child(even) {
            flex-direction: row-reverse;
        }

        /* 对比评测表格 */
        .table-responsive {
            overflow-x: auto;
            background: #ffffff;
            border-radius: 16px;
            border: 1px solid var(--border);
            margin-bottom: 30px;
        }

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

        th, td {
            padding: 16px 24px;
            border-bottom: 1px solid var(--border);
        }

        th {
            background: var(--gray-light);
            font-weight: 700;
        }

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

        .badge-score {
            display: inline-block;
            background: linear-gradient(135deg, #ff007a, #7c3aed);
            color: #ffffff;
            padding: 4px 10px;
            border-radius: 5px;
            font-weight: 800;
        }

        /* 案例中心 - 图片展示 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

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

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

        .case-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }

        .case-info {
            padding: 20px;
        }

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

        .faq-item {
            background: #ffffff;
            border: 1px solid var(--border);
            border-radius: 10px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-question {
            padding: 20px;
            font-weight: 700;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .faq-question::after {
            content: "+";
            font-size: 20px;
            transition: var(--transition);
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            padding: 0 20px;
            color: var(--gray-dark);
            font-size: 15px;
        }

        .faq-item.active .faq-answer {
            padding: 0 20px 20px 20px;
        }

        /* 智能表单 */
        .match-form {
            max-width: 600px;
            margin: 0 auto;
            background: #ffffff;
            padding: 40px;
            border-radius: 16px;
            border: 1px solid var(--border);
            box-shadow: 0 10px 25px rgba(0,0,0,0.05);
        }

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

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

        .form-control {
            width: 100%;
            padding: 12px;
            border: 1px solid var(--border);
            border-radius: 8px;
            font-size: 14px;
            background-color: var(--gray-light);
            transition: var(--transition);
        }

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

        /* 评论卡片 */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .comment-card {
            background: #ffffff;
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border);
            position: relative;
        }

        .comment-user {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 15px;
        }

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

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

        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--primary);
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            box-shadow: 0 4px 10px rgba(0,0,0,0.15);
            cursor: pointer;
            transition: var(--transition);
            position: relative;
        }

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

        .qr-popup {
            position: absolute;
            bottom: 60px;
            right: 0;
            background: #ffffff;
            padding: 15px;
            border-radius: 10px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.2);
            display: none;
            width: 150px;
            text-align: center;
        }

        .qr-popup img {
            width: 100%;
            height: auto;
            border-radius: 5px;
        }

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

        /* 页脚与友情链接 */
        footer {
            background: var(--dark);
            color: #94a3b8;
            padding: 60px 0 30px 0;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 50px;
            margin-bottom: 40px;
        }

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

        .footer-links h4 {
            color: #ffffff;
            margin-bottom: 20px;
            font-weight: 700;
        }

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

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

        .footer-links a {
            color: #94a3b8;
            text-decoration: none;
            transition: var(--transition);
        }

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

        .friendship-links {
            border-top: 1px solid #1e293b;
            padding-top: 20px;
            margin-top: 20px;
            text-align: center;
        }

        .friendship-links a {
            color: #64748b;
            text-decoration: none;
            margin: 0 10px;
            font-size: 13px;
        }

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

        .copyright {
            text-align: center;
            border-top: 1px solid #1e293b;
            padding-top: 20px;
            margin-top: 30px;
            font-size: 12px;
        }

        /* 响应式适配 */
        @media (max-width: 992px) {
            .hero-features-preview {
                grid-template-columns: repeat(2, 1fr);
            }
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .service-grid, .case-grid, .comments-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .solution-tabs {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: #ffffff;
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border);
            }
            .nav-menu.active {
                display: flex;
            }
            .mobile-toggle {
                display: block;
            }
            .hero h1 {
                font-size: 32px;
            }
            .hero-features-preview {
                grid-template-columns: 1fr;
            }
            .service-grid, .case-grid, .comments-grid {
                grid-template-columns: 1fr;
            }
            .timeline::before {
                left: 20px;
            }
            .timeline-item {
                flex-direction: row !important;
                justify-content: flex-start;
                padding-left: 40px;
            }
            .timeline-item::after {
                left: 20px;
            }
            .timeline-content {
                width: 100%;
            }
        }