/* 变量定义：潮流艳色风（基于浅色背景） */
        :root {
            --primary: #7928ca; /* 潮流紫 */
            --primary-gradient: linear-gradient(135deg, #7928ca 0%, #ff007a 100%);
            --secondary: #ff007a; /* 潮流粉 */
            --accent: #00df89; /* 极光绿 */
            --dark: #0f172a; /* 深灰蓝 */
            --light-bg: #fafafa;
            --card-bg: #ffffff;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --border-color: #f1f5f9;
            --max-width: 1200px;
        }

        /* 基础重置 */
        * {
            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(--light-bg);
            color: var(--text-main);
            line-height: 1.6;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.3s ease;
        }

        /* 通用容器 */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 潮流背景点缀 */
        .neon-glow-bg {
            position: absolute;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(121, 40, 202, 0.08) 0%, rgba(255, 0, 122, 0.05) 50%, rgba(255, 255, 255, 0) 100%);
            border-radius: 50%;
            z-index: -1;
            filter: blur(40px);
        }

        /* 头部导航 */
        header {
            position: sticky;
            top: 0;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            z-index: 1000;
        }

        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 80px;
        }

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

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

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

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

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-main);
            padding: 8px 12px;
            border-radius: 8px;
        }

        .nav-link:hover {
            color: var(--secondary);
            background: rgba(255, 0, 122, 0.05);
        }

        .nav-btn {
            background: var(--primary-gradient);
            color: #fff;
            padding: 10px 24px;
            border-radius: 50px;
            font-weight: 600;
            box-shadow: 0 4px 15px rgba(121, 40, 202, 0.2);
        }

        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(121, 40, 202, 0.35);
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 6px;
            cursor: pointer;
        }

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

        /* 页面大标题规范 */
        h1 {
            font-size: 2.8rem;
            line-height: 1.2;
            font-weight: 900;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 20px;
        }

        h2 {
            font-size: 2rem;
            text-align: center;
            margin-bottom: 40px;
            position: relative;
            color: var(--dark);
        }

        h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--primary-gradient);
            margin: 12px auto 0;
            border-radius: 2px;
        }

        h3 {
            font-size: 1.3rem;
            margin-bottom: 12px;
            color: var(--dark);
        }

        /* Hero首屏 - 严禁出现任何图片 */
        .hero-section {
            position: relative;
            padding: 120px 0 100px;
            background: radial-gradient(circle at 80% 20%, rgba(121, 40, 202, 0.05) 0%, rgba(255, 255, 255, 0) 50%);
            text-align: center;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(255, 0, 122, 0.08);
            color: var(--secondary);
            font-weight: 700;
            font-size: 14px;
            border-radius: 50px;
            margin-bottom: 24px;
            border: 1px solid rgba(255, 0, 122, 0.15);
        }

        .hero-subtitle {
            font-size: 1.25rem;
            color: var(--text-muted);
            max-width: 700px;
            margin: 0 auto 40px;
        }

        .hero-buttons {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 60px;
        }

        .btn-primary {
            background: var(--primary-gradient);
            color: #fff;
            padding: 16px 36px;
            font-size: 18px;
            font-weight: 700;
            border-radius: 50px;
            box-shadow: 0 8px 25px rgba(255, 0, 122, 0.25);
        }

        .btn-primary:hover {
            transform: scale(1.05);
            box-shadow: 0 12px 30px rgba(255, 0, 122, 0.35);
        }

        .btn-secondary {
            background: #fff;
            color: var(--text-main);
            border: 2px solid var(--border-color);
            padding: 16px 36px;
            font-size: 18px;
            font-weight: 700;
            border-radius: 50px;
        }

        .btn-secondary:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(121, 40, 202, 0.02);
        }

        /* 数据指标卡片 */
        .hero-stats {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 24px;
            margin-top: 40px;
        }

        .stat-card {
            background: var(--card-bg);
            padding: 24px;
            border-radius: 20px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.02);
            border: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
            transition: all 0.3s ease;
        }

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

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

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

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

        /* 通用区块设置 */
        section {
            padding: 90px 0;
            position: relative;
        }

        .section-desc {
            text-align: center;
            max-width: 600px;
            margin: -20px auto 50px;
            color: var(--text-muted);
            font-size: 16px;
        }

        /* 平台介绍 */
        .about-section {
            background: #fff;
        }

        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .about-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 30px;
        }

        .about-feature-item {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 600;
        }

        .about-feature-item svg {
            color: var(--accent);
            flex-shrink: 0;
        }

        /* 全平台AIGC服务 */
        .services-section {
            background: var(--light-bg);
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

        .service-card {
            background: var(--card-bg);
            padding: 40px 30px;
            border-radius: 24px;
            border: 1px solid var(--border-color);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            position: relative;
        }

        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(121, 40, 202, 0.08);
            border-color: rgba(121, 40, 202, 0.2);
        }

        .service-icon {
            width: 60px;
            height: 60px;
            border-radius: 16px;
            background: rgba(121, 40, 202, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 24px;
            color: var(--primary);
        }

        .service-card:hover .service-icon {
            background: var(--primary-gradient);
            color: #fff;
        }

        /* 标签云组件 */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-top: 40px;
            max-width: 900px;
            margin-left: auto;
            margin-right: auto;
        }

        .tag-item {
            background: #fff;
            padding: 6px 14px;
            border-radius: 30px;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-main);
            border: 1px solid var(--border-color);
            transition: all 0.2s ease;
        }

        .tag-item:hover {
            background: var(--primary-gradient);
            color: #fff;
            border-color: transparent;
            transform: scale(1.05);
        }

        /* 一站式AIGC制作 */
        .production-section {
            background: #fff;
        }

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

        .scene-selector {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .scene-btn {
            padding: 18px 24px;
            background: var(--light-bg);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            text-align: left;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .scene-btn.active, .scene-btn:hover {
            background: var(--primary-gradient);
            color: #fff;
            border-color: transparent;
            box-shadow: 0 8px 20px rgba(121, 40, 202, 0.15);
        }

        .scene-display {
            background: var(--light-bg);
            border-radius: 24px;
            padding: 40px;
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .scene-content {
            display: none;
        }

        .scene-content.active {
            display: block;
            animation: fadeIn 0.5s ease forwards;
        }

        /* 标准化AIGC流程 */
        .workflow-section {
            background: var(--light-bg);
        }

        .timeline {
            position: relative;
            max-width: 900px;
            margin: 0 auto;
        }

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

        .timeline-number {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--primary-gradient);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 18px;
            flex-shrink: 0;
            box-shadow: 0 4px 15px rgba(121, 40, 202, 0.2);
            z-index: 2;
        }

        .timeline-content {
            margin-left: 30px;
            background: #fff;
            padding: 24px 30px;
            border-radius: 20px;
            border: 1px solid var(--border-color);
            flex-grow: 1;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.01);
        }

        .timeline-item::after {
            content: '';
            position: absolute;
            left: 24px;
            top: 50px;
            width: 2px;
            height: calc(100% + 40px);
            background: var(--border-color);
            z-index: 1;
        }

        .timeline-item:last-child::after {
            display: none;
        }

        /* 对比评测 - 高转化模块 */
        .rating-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fffbeb;
            color: #d97706;
            padding: 8px 16px;
            border-radius: 50px;
            font-weight: 700;
            border: 1px solid #fef3c7;
            margin-bottom: 24px;
        }

        .comparison-table-wrapper {
            overflow-x: auto;
            border-radius: 20px;
            border: 1px solid var(--border-color);
            box-shadow: 0 15px 40px rgba(0,0,0,0.02);
            background: #fff;
        }

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

        th, td {
            padding: 20px 24px;
            border-bottom: 1px solid var(--border-color);
        }

        th {
            background: #f8fafc;
            font-weight: 700;
            color: var(--dark);
        }

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

        .highlight-col {
            background: rgba(121, 40, 202, 0.02);
            font-weight: 600;
        }

        /* 价格与Token比价 */
        .pricing-section {
            background: #fff;
        }

        .price-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

        .price-card {
            background: #fff;
            border-radius: 24px;
            padding: 40px 30px;
            border: 2px solid var(--border-color);
            position: relative;
            transition: all 0.3s ease;
        }

        .price-card.popular {
            border-color: var(--secondary);
            box-shadow: 0 15px 35px rgba(255, 0, 122, 0.08);
        }

        .popular-badge {
            position: absolute;
            top: -15px;
            right: 30px;
            background: var(--primary-gradient);
            color: #fff;
            padding: 4px 12px;
            border-radius: 30px;
            font-size: 12px;
            font-weight: 700;
        }

        .price-val {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--dark);
            margin: 20px 0;
        }

        .price-features {
            list-style: none;
            margin: 30px 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .price-features li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
        }

        /* 案例中心 - 素材图严格规范 */
        .case-section {
            background: var(--light-bg);
        }

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

        .case-card {
            background: #fff;
            border-radius: 24px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
        }

        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 35px rgba(0,0,0,0.05);
        }

        .case-img-wrapper {
            width: 100%;
            height: 200px;
            overflow: hidden;
            background: #f1f5f9;
            position: relative;
        }

        .case-img-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .case-body {
            padding: 24px;
        }

        /* 培训中心 */
        .training-section {
            background: #fff;
        }

        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }

        .training-card {
            background: var(--light-bg);
            border: 1px solid var(--border-color);
            padding: 24px;
            border-radius: 20px;
            transition: all 0.3s ease;
            text-align: center;
        }

        .training-card:hover {
            background: #fff;
            border-color: var(--primary);
            box-shadow: 0 10px 25px rgba(121, 40, 202, 0.05);
        }

        /* 客户评论 - 6条 */
        .reviews-section {
            background: var(--light-bg);
        }

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

        .review-card {
            background: #fff;
            padding: 30px;
            border-radius: 24px;
            border: 1px solid var(--border-color);
            position: relative;
        }

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

        .author-avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary-gradient);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
        }

        .author-info h4 {
            font-size: 15px;
            color: var(--dark);
        }

        .author-info p {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* FAQ折叠面板 */
        .faq-section {
            background: #fff;
        }

        .faq-container {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

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

        .faq-question {
            padding: 20px 24px;
            font-weight: 700;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            user-select: none;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 15px;
        }

        .faq-item.active {
            border-color: var(--primary);
            background: #fff;
        }

        .faq-item.active .faq-answer {
            max-height: 1000px;
            padding: 0 24px 20px;
            transition: max-height 0.5s ease-in-out;
        }

        .faq-icon {
            transition: transform 0.3s ease;
        }

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

        /* 百科 & 资讯 */
        .knowledge-section {
            background: var(--light-bg);
        }

        .knowledge-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .article-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .article-item {
            background: #fff;
            padding: 18px 24px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .article-item a {
            font-weight: 700;
            color: var(--dark);
        }

        .article-item a:hover {
            color: var(--secondary);
        }

        /* 表单与联系 */
        .contact-section {
            background: #fff;
        }

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

        .form-card {
            background: var(--light-bg);
            border-radius: 24px;
            padding: 40px;
            border: 1px solid var(--border-color);
        }

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

        .form-label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            font-size: 14px;
        }

        .form-control {
            width: 100%;
            padding: 14px 18px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            background: #fff;
            outline: none;
            transition: all 0.3s ease;
        }

        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(121, 40, 202, 0.1);
        }

        .form-submit-btn {
            width: 100%;
            padding: 16px;
            background: var(--primary-gradient);
            color: #fff;
            border: none;
            border-radius: 50px;
            font-weight: 700;
            font-size: 16px;
            cursor: pointer;
            box-shadow: 0 5px 15px rgba(255, 0, 122, 0.2);
            transition: all 0.3s ease;
        }

        .form-submit-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(255, 0, 122, 0.3);
        }

        .contact-info-card {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .qr-box {
            background: var(--light-bg);
            border: 1px solid var(--border-color);
            border-radius: 20px;
            padding: 24px;
            text-align: center;
        }

        .qr-box img {
            width: 150px;
            height: 150px;
            object-fit: contain;
            margin-bottom: 12px;
            border-radius: 12px;
        }

        /* 代理加盟板块 */
        .agent-section {
            background: radial-gradient(circle at 10% 90%, rgba(255, 0, 122, 0.05) 0%, rgba(255, 255, 255, 0) 50%);
            border-top: 1px solid var(--border-color);
        }

        .agent-banner {
            background: var(--primary-gradient);
            border-radius: 30px;
            padding: 60px;
            color: #fff;
            position: relative;
            overflow: hidden;
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
            align-items: center;
        }

        .agent-banner h3 {
            color: #fff;
            font-size: 2rem;
            margin-bottom: 16px;
        }

        .agent-banner p {
            color: rgba(255,255,255,0.9);
            margin-bottom: 30px;
        }

        .btn-light {
            background: #fff;
            color: var(--primary);
            padding: 14px 30px;
            border-radius: 50px;
            font-weight: 700;
            display: inline-block;
        }

        .btn-light:hover {
            transform: scale(1.05);
            box-shadow: 0 10px 25px rgba(255,255,255,0.25);
        }

        .agent-img-box img {
            border-radius: 20px;
            box-shadow: 0 15px 35px rgba(0,0,0,0.15);
        }

        /* 页脚 */
        footer {
            background: var(--dark);
            color: rgba(255,255,255,0.7);
            padding: 80px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr repeat(3, 1fr);
            gap: 40px;
            margin-bottom: 60px;
        }

        .footer-logo-desc p {
            margin-top: 16px;
            font-size: 14px;
            line-height: 1.8;
        }

        .footer-title {
            color: #fff;
            font-weight: 700;
            margin-bottom: 20px;
            font-size: 16px;
        }

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

        .footer-links a {
            font-size: 14px;
            color: rgba(255,255,255,0.7);
        }

        .footer-links a:hover {
            color: var(--secondary);
            padding-left: 5px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 13px;
        }

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .friend-links a {
            color: rgba(255,255,255,0.5);
        }

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

        /* 侧边悬浮组件 */
        .sticky-toolbar {
            position: fixed;
            right: 20px;
            bottom: 100px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .toolbar-item {
            width: 50px;
            height: 50px;
            background: #fff;
            border-radius: 50%;
            box-shadow: 0 4px 20px rgba(0,0,0,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s ease;
            position: relative;
        }

        .toolbar-item:hover {
            background: var(--primary-gradient);
            color: #fff;
            transform: translateY(-3px);
        }

        .toolbar-item svg {
            width: 20px;
            height: 20px;
        }

        .toolbar-popover {
            position: absolute;
            right: 60px;
            bottom: 0;
            background: #fff;
            padding: 16px;
            border-radius: 16px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.15);
            display: none;
            text-align: center;
            width: 160px;
            color: var(--text-main);
        }

        .toolbar-popover img {
            width: 120px;
            height: 120px;
            margin-bottom: 8px;
        }

        .toolbar-item:hover .toolbar-popover {
            display: block;
        }

        /* 响应式调整 */
        @media (max-width: 1024px) {
            h1 { font-size: 2.2rem; }
            .grid-2 { grid-template-columns: 1fr; gap: 40px; }
            .agent-banner { grid-template-columns: 1fr; text-align: center; padding: 40px; }
            .agent-img-box { display: none; }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                position: absolute;
                top: 80px;
                left: 0;
                width: 100%;
                background: #fff;
                flex-direction: column;
                padding: 20px;
                box-shadow: 0 10px 20px rgba(0,0,0,0.05);
                border-top: 1px solid var(--border-color);
            }
            .nav-menu.active {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
            .interactive-grid { grid-template-columns: 1fr; }
            .contact-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; }
            .hero-buttons { flex-direction: column; align-items: center; }
            .btn-primary, .btn-secondary { width: 100%; max-width: 320px; text-align: center; }
            .knowledge-grid { grid-template-columns: 1fr; }
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }