:root {
            --rainbow-grad: linear-gradient(90deg, #ff5e62, #ff9966, #ffd97d, #6bcb77, #4d96ff, #9b5de5);
            --primary: #9b5de5;
            --primary-light: #f3ebfc;
            --text-dark: #0f172a;
            --text-muted: #475569;
            --bg-light: #f8fafc;
            --bg-white: #ffffff;
            --border-color: #e2e8f0;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 16px 36px rgba(155, 93, 229, 0.12);
        }

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

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

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

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

        /* 顶部导航 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            z-index: 1000;
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

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

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

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

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

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

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

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

        .nav-btn {
            background: var(--rainbow-grad);
            color: #fff;
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 600;
            box-shadow: var(--shadow-sm);
        }

        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            opacity: 0.95;
        }

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

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

        /* Hero首屏 - 绝对无图 */
        .hero {
            padding: 160px 0 80px 0;
            background: radial-gradient(circle at 10% 20%, rgba(255, 94, 98, 0.05) 0%, rgba(77, 150, 255, 0.05) 90%);
            text-align: center;
            position: relative;
        }

        .rainbow-badge {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 50px;
            background: var(--rainbow-grad);
            color: #fff;
            font-size: 0.85rem;
            font-weight: 700;
            margin-bottom: 20px;
            box-shadow: var(--shadow-sm);
        }

        h1.hero-title {
            font-size: 2.8rem;
            line-height: 1.25;
            font-weight: 850;
            color: var(--text-dark);
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }

        .hero-desc {
            font-size: 1.2rem;
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto 35px auto;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-bottom: 50px;
            flex-wrap: wrap;
        }

        .btn-primary {
            background: var(--rainbow-grad);
            color: #fff;
            padding: 14px 32px;
            border-radius: 50px;
            font-size: 1.1rem;
            font-weight: 700;
            box-shadow: var(--shadow-md);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
        }

        .btn-secondary {
            background: #fff;
            color: var(--text-dark);
            border: 2px solid var(--border-color);
            padding: 12px 30px;
            border-radius: 50px;
            font-size: 1.1rem;
            font-weight: 600;
        }

        .btn-secondary:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

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

        .metric-card {
            background: var(--bg-white);
            border-radius: 16px;
            padding: 24px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

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

        .metric-card h3 {
            font-size: 2.2rem;
            font-weight: 800;
            background: var(--rainbow-grad);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 5px;
        }

        .metric-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* 通用区块样式 */
        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
        }

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

        .section-tag {
            color: var(--primary);
            font-weight: 700;
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 10px;
            display: inline-block;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 15px;
            color: var(--text-dark);
        }

        .section-desc {
            color: var(--text-muted);
            font-size: 1rem;
        }

        /* 平台介绍 */
        .intro-box {
            background: var(--bg-white);
            border-radius: 24px;
            padding: 40px;
            box-shadow: var(--shadow-md);
            border: 2px solid transparent;
            background-image: linear-gradient(white, white), var(--rainbow-grad);
            background-origin: border-box;
            background-clip: padding-box, border-box;
        }

        .intro-content {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
            align-items: center;
        }

        .intro-text h3 {
            font-size: 1.6rem;
            font-weight: 800;
            margin-bottom: 15px;
        }

        .intro-text p {
            color: var(--text-muted);
            margin-bottom: 20px;
            font-size: 1rem;
        }

        .intro-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
        }

        .intro-feature-item {
            background-color: var(--bg-light);
            padding: 15px;
            border-radius: 12px;
            font-size: 0.9rem;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .intro-feature-item::before {
            content: "✓";
            color: #6bcb77;
            font-weight: 900;
        }

        .intro-media img {
            border-radius: 16px;
            box-shadow: var(--shadow-md);
            width: 100%;
        }

        /* 全平台AIGC服务 + 模型聚合 */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

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

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

        .service-icon {
            width: 50px;
            height: 50px;
            border-radius: 12px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 20px;
        }

        .service-card h3 {
            font-size: 1.25rem;
            margin-bottom: 10px;
        }

        .service-card p {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 15px;
        }

        .model-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-top: 15px;
        }

        .tag {
            font-size: 0.75rem;
            padding: 3px 8px;
            background-color: var(--bg-light);
            color: var(--text-muted);
            border-radius: 4px;
            font-weight: 500;
        }

        .tag.rainbow-tag {
            background: var(--rainbow-grad);
            color: #fff;
            font-weight: 600;
        }

        /* 标签云组件 */
        .tag-cloud-wrapper {
            margin-top: 40px;
            background: var(--bg-white);
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
        }

        .tag-cloud-title {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 15px;
            text-align: center;
        }

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

        /* 一站式AIGC制作流程与标准化 */
        .timeline {
            position: relative;
            max-width: 900px;
            margin: 0 auto;
        }

        .timeline::after {
            content: '';
            position: absolute;
            width: 4px;
            background: var(--rainbow-grad);
            top: 0;
            bottom: 0;
            left: 50%;
            margin-left: -2px;
        }

        .timeline-item {
            padding: 10px 40px;
            position: relative;
            background-color: inherit;
            width: 50%;
        }

        .timeline-item::after {
            content: '';
            position: absolute;
            width: 20px;
            height: 20px;
            right: -10px;
            background-color: white;
            border: 4px solid var(--primary);
            top: 15px;
            border-radius: 50%;
            z-index: 1;
        }

        .left-timeline {
            left: 0;
        }

        .right-timeline {
            left: 50%;
        }

        .right-timeline::after {
            left: -10px;
        }

        .timeline-content {
            padding: 20px 30px;
            background-color: var(--bg-white);
            position: relative;
            border-radius: 12px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }

        .timeline-content h3 {
            font-size: 1.1rem;
            margin-bottom: 8px;
            color: var(--primary);
        }

        /* 全行业解决方案与案例 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .case-card {
            background-color: var(--bg-white);
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
        }

        .case-img {
            width: 100%;
            height: 240px;
            object-fit: cover;
        }

        .case-info {
            padding: 25px;
        }

        .case-tag {
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 700;
            margin-bottom: 10px;
            display: inline-block;
        }

        .case-info h3 {
            font-size: 1.3rem;
            margin-bottom: 10px;
        }

        .case-info p {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 15px;
        }

        /* 对比评测 - 表格 */
        .comparison-wrapper {
            background: var(--bg-white);
            border-radius: 20px;
            padding: 35px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-md);
            overflow-x: auto;
        }

        .comparison-rating {
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: var(--primary-light);
            padding: 20px;
            border-radius: 12px;
            margin-bottom: 30px;
        }

        .rating-stars {
            color: #ffd97d;
            font-size: 1.5rem;
            font-weight: 900;
        }

        .rating-score {
            font-weight: 800;
            color: var(--primary);
            font-size: 1.2rem;
        }

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

        .comp-table th, .comp-table td {
            padding: 15px;
            border-bottom: 1px solid var(--border-color);
        }

        .comp-table th {
            font-weight: 700;
            color: var(--text-dark);
        }

        .comp-table tr:hover {
            background-color: var(--bg-light);
        }

        .comp-highlight {
            font-weight: 700;
            color: var(--primary);
        }

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

        .token-card {
            background: var(--bg-white);
            border-radius: 16px;
            padding: 25px;
            border: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }

        .token-card.best {
            border: 2px solid var(--primary);
        }

        .token-badge {
            position: absolute;
            top: 15px;
            right: 15px;
            background: var(--rainbow-grad);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 2px 8px;
            border-radius: 4px;
        }

        /* 培训课程 */
        .course-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 15px;
        }

        .course-card {
            background-color: var(--bg-white);
            border-radius: 12px;
            padding: 20px;
            border: 1px solid var(--border-color);
            text-align: center;
            transition: var(--transition);
        }

        .course-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
            transform: translateY(-3px);
        }

        .course-icon {
            font-size: 1.8rem;
            margin-bottom: 10px;
        }

        .course-card h4 {
            font-size: 0.95rem;
            margin-bottom: 5px;
        }

        .course-card p {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* 服务网络 */
        .network-section {
            background-color: var(--bg-white);
            border-radius: 20px;
            padding: 40px;
            border: 1px solid var(--border-color);
        }

        .network-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 30px;
        }

        .network-item {
            text-align: center;
            padding: 15px;
            border-radius: 8px;
            background-color: var(--bg-light);
        }

        /* 评论 */
        .review-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .review-card {
            background: var(--bg-white);
            border-radius: 16px;
            padding: 25px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

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

        .reviewer-avatar {
            width: 45px;
            height: 45px;
            border-radius: 50%;
            background-color: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--primary);
        }

        .reviewer-detail h4 {
            font-size: 0.95rem;
        }

        .reviewer-detail span {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

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

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

        .faq-question {
            padding: 20px;
            width: 100%;
            text-align: left;
            background: transparent;
            border: none;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .faq-answer {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.2s ease-out, padding 0.2s ease-out;
            color: var(--text-muted);
            font-size: 0.9rem;
            border-top: 1px solid transparent;
        }

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

        .faq-icon::before {
            content: "+";
            font-size: 1.2rem;
            font-weight: 700;
        }

        .faq-item.active .faq-icon::before {
            content: "−";
        }

        /* 百科 & 文章 */
        .articles-wrapper {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 30px;
        }

        .articles-list {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .article-item {
            background: var(--bg-white);
            padding: 20px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .article-title {
            font-weight: 600;
            font-size: 0.95rem;
        }

        .article-link {
            color: var(--primary);
            font-size: 0.85rem;
            font-weight: 600;
        }

        .glossary-box {
            background: var(--bg-white);
            padding: 25px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

        .glossary-item {
            margin-bottom: 15px;
        }

        .glossary-item h4 {
            font-size: 0.9rem;
            color: var(--primary);
            margin-bottom: 4px;
        }

        .glossary-item p {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* 需求表单与联系 */
        .contact-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
        }

        .form-box {
            background: var(--bg-white);
            padding: 40px;
            border-radius: 20px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

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

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

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

        .form-control:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 3px var(--primary-light);
        }

        .contact-info-box {
            background: var(--bg-white);
            padding: 40px;
            border-radius: 20px;
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .info-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
            list-style: none;
        }

        .info-item {
            display: flex;
            align-items: flex-start;
            gap: 15px;
        }

        .info-label {
            font-weight: 700;
            font-size: 0.9rem;
            min-width: 80px;
        }

        .qr-code {
            max-width: 120px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 5px;
            background: #fff;
        }

        /* 友情链接与页脚 */
        footer {
            background-color: var(--text-dark);
            color: #94a3b8;
            padding: 60px 0 30px 0;
            font-size: 0.85rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 40px;
            border-bottom: 1px solid #334155;
            padding-bottom: 40px;
        }

        .footer-logo img {
            height: 35px;
            margin-bottom: 15px;
        }

        .footer-col h4 {
            color: #fff;
            margin-bottom: 15px;
            font-size: 0.95rem;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col a:hover {
            color: #fff;
        }

        .friend-links {
            margin-top: 20px;
            line-height: 2;
        }

        .friend-links a {
            margin-right: 15px;
            display: inline-block;
        }

        .friend-links a:hover {
            color: #fff;
            text-decoration: underline;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
        }

        /* 浮动组件 */
        .floating-kf {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: var(--rainbow-grad);
            color: #fff;
            width: 60px;
            height: 60px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-lg);
            cursor: pointer;
            z-index: 999;
            transition: var(--transition);
        }

        .floating-kf:hover {
            transform: scale(1.1);
        }

        .kf-panel {
            position: fixed;
            bottom: 100px;
            right: 30px;
            width: 250px;
            background: #fff;
            border-radius: 12px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-color);
            padding: 20px;
            display: none;
            z-index: 999;
            text-align: center;
        }

        .kf-panel img {
            width: 100%;
            border-radius: 8px;
            margin-bottom: 10px;
        }

        .kf-panel p {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 5px;
        }

        /* 响应式适配 */
        @media (max-width: 1024px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .course-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .review-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            h1.hero-title {
                font-size: 2rem;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: #fff;
                border-bottom: 1px solid var(--border-color);
                padding: 20px;
                box-shadow: var(--shadow-md);
            }
            .nav-menu.active {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
            .intro-content {
                grid-template-columns: 1fr;
            }
            .timeline::after {
                left: 31px;
            }
            .timeline-item {
                width: 100%;
                padding-left: 70px;
                padding-right: 25px;
            }
            .timeline-item::after {
                left: 21px;
                right: auto;
            }
            .right-timeline {
                left: 0;
            }
            .case-grid {
                grid-template-columns: 1fr;
            }
            .token-grid {
                grid-template-columns: 1fr;
            }
            .course-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .network-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .review-grid {
                grid-template-columns: 1fr;
            }
            .contact-grid {
                grid-template-columns: 1fr;
            }
            .articles-wrapper {
                grid-template-columns: 1fr;
            }
        }