/* 缤纷糖果亮色风设计系统 */
        :root {
            --bg-gradient: linear-gradient(135deg, #fef2f2 0%, #f0fdf4 50%, #eff6ff 100%);
            --candy-pink: #ffb7b2;
            --candy-peach: #ffdac1;
            --candy-yellow: #e2f0cb;
            --candy-green: #b5ead7;
            --candy-purple: #c7ceea;
            --primary: #6c5ce7;
            --primary-light: #a29bfe;
            --text-dark: #1e293b;
            --text-muted: #64748b;
            --white-trans: rgba(255, 255, 255, 0.85);
            --border-glow: rgba(108, 92, 231, 0.15);
            --card-shadow: 0 12px 30px rgba(0, 0, 0, 0.04), 0 4px 10px rgba(108, 92, 231, 0.05);
        }

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

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

        /* 布局容器 */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

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

        /* 顶部导航 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 70px;
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            z-index: 1000;
            border-bottom: 1px solid rgba(255, 255, 255, 0.4);
            box-shadow: 0 4px 20px rgba(0,0,0,0.02);
        }

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

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

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

        .brand-name {
            font-size: 1.25rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), #fd79a8);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

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

        .nav-menu a {
            text-decoration: none;
            color: var(--text-dark);
            font-weight: 500;
            font-size: 0.95rem;
            transition: color 0.3s;
            padding: 6px 12px;
            border-radius: 12px;
        }

        .nav-menu a:hover {
            color: var(--primary);
            background: rgba(108, 92, 231, 0.08);
        }

        .nav-btn {
            background: linear-gradient(135deg, var(--primary), #a29bfe);
            color: white !important;
            padding: 8px 20px !important;
            border-radius: 20px !important;
            box-shadow: 0 4px 15px rgba(108, 92, 231, 0.3);
            transition: transform 0.3s, box-shadow 0.3s !important;
        }

        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(108, 92, 231, 0.4);
        }

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

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

        /* 英雄首屏 (无图) */
        .hero {
            padding: 140px 0 100px 0;
            text-align: center;
            background: radial-gradient(circle at 10% 20%, rgba(254, 219, 219, 0.4) 0%, rgba(236, 243, 220, 0.4) 90%);
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 18px;
            background: var(--white-trans);
            border: 1px solid rgba(255, 255, 255, 0.6);
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            box-shadow: 0 4px 10px rgba(0,0,0,0.02);
            margin-bottom: 24px;
        }

        .hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-dark);
            margin-bottom: 24px;
            letter-spacing: -0.5px;
        }

        .hero h1 span {
            background: linear-gradient(135deg, #6c5ce7, #fd79a8, #0984e3);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 1.15rem;
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto 36px auto;
        }

        .hero-cta {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn-primary {
            display: inline-block;
            padding: 14px 32px;
            background: linear-gradient(135deg, var(--primary), #fd79a8);
            color: white;
            text-decoration: none;
            font-weight: 600;
            border-radius: 30px;
            box-shadow: 0 8px 25px rgba(108, 92, 231, 0.35);
            transition: transform 0.3s, box-shadow 0.3s;
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(108, 92, 231, 0.45);
        }

        .btn-secondary {
            display: inline-block;
            padding: 14px 32px;
            background: var(--white-trans);
            color: var(--text-dark);
            text-decoration: none;
            font-weight: 600;
            border: 1px solid rgba(255, 255, 255, 0.8);
            border-radius: 30px;
            box-shadow: 0 8px 25px rgba(0,0,0,0.03);
            transition: transform 0.3s, background-color 0.3s;
        }

        .btn-secondary:hover {
            transform: translateY(-3px);
            background: white;
        }

        /* 标签区 / 聚合大模型 */
        .hero-tags {
            margin-top: 50px;
            max-width: 900px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-tags p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 16px;
            font-weight: 600;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 8px;
        }

        .tag-item {
            padding: 5px 12px;
            background: var(--white-trans);
            border: 1px solid rgba(255, 255, 255, 0.7);
            border-radius: 30px;
            font-size: 0.8rem;
            color: var(--text-dark);
            font-weight: 500;
            box-shadow: 0 2px 5px rgba(0,0,0,0.02);
            transition: all 0.2s;
        }

        .tag-item:hover {
            background: var(--candy-peach);
            transform: scale(1.05);
        }

        /* 数据指标卡片 */
        .stats-section {
            background: linear-gradient(180deg, rgba(236, 243, 220, 0.4) 0%, rgba(255,255,255,0) 100%);
            padding-top: 0;
            margin-top: -30px;
        }

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

        .stat-card {
            background: var(--white-trans);
            border: 1px solid rgba(255, 255, 255, 0.6);
            border-radius: 24px;
            padding: 30px 20px;
            text-align: center;
            box-shadow: var(--card-shadow);
            transition: transform 0.3s;
        }

        .stat-card:hover {
            transform: translateY(-5px);
        }

        .stat-card:nth-child(1) { border-top: 4px solid var(--candy-pink); }
        .stat-card:nth-child(2) { border-top: 4px solid var(--candy-green); }
        .stat-card:nth-child(3) { border-top: 4px solid var(--candy-purple); }
        .stat-card:nth-child(4) { border-top: 4px solid var(--candy-peach); }

        .stat-val {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 600;
        }

        /* 通用标题 */
        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 50px auto;
        }

        .section-header h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 16px;
            color: var(--text-dark);
        }

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

        /* 服务能力卡片 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .service-card {
            background: var(--white-trans);
            border: 1px solid rgba(255, 255, 255, 0.8);
            border-radius: 24px;
            padding: 35px 24px;
            box-shadow: var(--card-shadow);
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 40px rgba(108, 92, 231, 0.1);
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: linear-gradient(90deg, var(--candy-pink), var(--candy-purple));
        }

        .service-icon {
            width: 60px;
            height: 60px;
            border-radius: 18px;
            background: var(--candy-peach);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            margin-bottom: 24px;
        }

        .service-card h3 {
            font-size: 1.25rem;
            margin-bottom: 12px;
            font-weight: 700;
        }

        .service-card p {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 16px;
        }

        .service-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }

        .service-tags span {
            font-size: 0.75rem;
            background: rgba(255, 255, 255, 0.6);
            border: 1px solid rgba(0,0,0,0.05);
            padding: 2px 8px;
            border-radius: 10px;
            color: var(--text-muted);
        }

        /* 自动化制作 */
        .creation-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
            align-items: center;
        }

        .creation-content h3 {
            font-size: 1.75rem;
            font-weight: 800;
            margin-bottom: 20px;
        }

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

        .creation-list li {
            position: relative;
            padding-left: 30px;
            margin-bottom: 16px;
            font-weight: 500;
        }

        .creation-list li::before {
            content: "✓";
            position: absolute;
            left: 0;
            top: 0;
            width: 20px;
            height: 20px;
            background: var(--candy-green);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            font-weight: bold;
            color: #1b4d3e;
        }

        .creation-showcase {
            background: var(--white-trans);
            border: 1px solid rgba(255, 255, 255, 0.8);
            padding: 30px;
            border-radius: 24px;
            box-shadow: var(--card-shadow);
        }

        .showcase-item {
            padding: 12px;
            border-bottom: 1px dashed rgba(0,0,0,0.05);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .showcase-item:last-child {
            border-bottom: none;
        }

        .showcase-item span:first-child {
            font-weight: 600;
        }

        .showcase-badge {
            background: var(--candy-pink);
            padding: 3px 10px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: bold;
        }

        /* 流程步骤 */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .step-card {
            background: var(--white-trans);
            border: 1px solid rgba(255,255,255,0.7);
            border-radius: 24px;
            padding: 30px 20px;
            text-align: center;
            position: relative;
            box-shadow: var(--card-shadow);
        }

        .step-num {
            width: 45px;
            height: 45px;
            background: var(--candy-yellow);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.1rem;
            margin: 0 auto 20px auto;
            color: var(--text-dark);
            border: 2px solid white;
            box-shadow: 0 4px 10px rgba(0,0,0,0.05);
        }

        .step-card h4 {
            margin-bottom: 10px;
            font-weight: 700;
        }

        .step-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* 对比评测表格 */
        .comparison-table-wrapper {
            background: var(--white-trans);
            border: 1px solid rgba(255, 255, 255, 0.8);
            border-radius: 24px;
            padding: 30px;
            box-shadow: var(--card-shadow);
            overflow-x: auto;
        }

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

        .comparison-table th, .comparison-table td {
            padding: 16px;
            border-bottom: 1px solid rgba(0,0,0,0.05);
        }

        .comparison-table th {
            font-weight: 700;
            background: rgba(255, 255, 255, 0.5);
        }

        .comparison-table tr:hover {
            background: rgba(255,255,255,0.3);
        }

        .badge-score {
            display: inline-block;
            padding: 4px 12px;
            background: linear-gradient(135deg, var(--candy-pink), var(--candy-peach));
            border-radius: 12px;
            font-weight: 700;
            font-size: 0.9rem;
        }

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

        .token-card {
            background: var(--white-trans);
            border-radius: 24px;
            padding: 24px;
            border: 1px solid rgba(255,255,255,0.8);
            box-shadow: var(--card-shadow);
        }

        .token-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 16px;
            border-bottom: 1px solid rgba(0,0,0,0.05);
            padding-bottom: 12px;
        }

        .token-name {
            font-weight: 700;
            font-size: 1.1rem;
        }

        .token-price {
            color: #2ecc71;
            font-weight: 800;
            font-size: 1.2rem;
        }

        .token-details {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .token-details div {
            display: flex;
            justify-content: space-between;
            margin-bottom: 8px;
        }

        /* 案例与素材图 (包含横版与方版素材，保证无错位) */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .case-card {
            background: var(--white-trans);
            border: 1px solid rgba(255,255,255,0.8);
            border-radius: 24px;
            overflow: hidden;
            box-shadow: var(--card-shadow);
            transition: transform 0.3s;
        }

        .case-card:hover {
            transform: translateY(-6px);
        }

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

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

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

        .case-info {
            padding: 24px;
        }

        .case-info h4 {
            font-size: 1.1rem;
            margin-bottom: 10px;
            font-weight: 700;
        }

        .case-info p {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

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

        .faq-item {
            background: var(--white-trans);
            border: 1px solid rgba(255, 255, 255, 0.8);
            border-radius: 16px;
            margin-bottom: 12px;
            box-shadow: var(--card-shadow);
            overflow: hidden;
            transition: all 0.3s;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
        }

        .faq-item.active .faq-answer {
            max-height: 200px;
            padding-bottom: 20px;
        }

        .faq-icon::after {
            content: '+';
            font-size: 1.4rem;
            font-weight: 300;
            color: var(--primary);
        }

        .faq-item.active .faq-icon::after {
            content: '-';
        }

        /* 用户评论 */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .comment-card {
            background: var(--white-trans);
            border: 1px solid rgba(255,255,255,0.8);
            border-radius: 24px;
            padding: 30px;
            box-shadow: var(--card-shadow);
        }

        .comment-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }

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

        .comment-name {
            font-weight: 700;
            font-size: 0.95rem;
        }

        .comment-role {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        .comment-text {
            font-size: 0.9rem;
            color: var(--text-dark);
            line-height: 1.6;
        }

        /* 文章列表与资讯 */
        .articles-section {
            background: rgba(255, 255, 255, 0.4);
        }

        .article-list {
            list-style: none;
            max-width: 800px;
            margin: 0 auto;
        }

        .article-item {
            background: var(--white-trans);
            border: 1px solid rgba(255,255,255,0.7);
            border-radius: 16px;
            padding: 20px;
            margin-bottom: 12px;
            box-shadow: var(--card-shadow);
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: transform 0.2s;
        }

        .article-item:hover {
            transform: translateX(5px);
        }

        .article-title {
            font-weight: 700;
            text-decoration: none;
            color: var(--text-dark);
            font-size: 1rem;
        }

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

        .article-link-btn {
            background: var(--candy-yellow);
            color: var(--text-dark);
            text-decoration: none;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
        }

        /* 表单与需求匹配 */
        .form-section {
            background: radial-gradient(circle at top right, rgba(199, 206, 234, 0.3), transparent 70%);
        }

        .form-wrapper {
            max-width: 700px;
            margin: 0 auto;
            background: var(--white-trans);
            border: 1px solid rgba(255, 255, 255, 0.9);
            border-radius: 24px;
            padding: 40px;
            box-shadow: var(--card-shadow);
        }

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

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 700;
            font-size: 0.9rem;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid rgba(0,0,0,0.1);
            border-radius: 12px;
            background: rgba(255,255,255,0.7);
            font-family: inherit;
            font-size: 0.95rem;
            transition: border-color 0.3s;
        }

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

        .form-btn {
            width: 100%;
            padding: 14px;
            background: linear-gradient(135deg, var(--primary), #fd79a8);
            border: none;
            color: white;
            font-weight: 700;
            font-size: 1rem;
            border-radius: 12px;
            cursor: pointer;
            box-shadow: 0 6px 20px rgba(108, 92, 231, 0.3);
            transition: transform 0.2s;
        }

        .form-btn:hover {
            transform: translateY(-2px);
        }

        /* 浮动客服 */
        .float-service {
            position: fixed;
            right: 24px;
            bottom: 24px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--white-trans);
            border: 1px solid rgba(255,255,255,0.8);
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            text-decoration: none;
            font-size: 1.2rem;
            transition: all 0.3s;
            position: relative;
        }

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

        .float-btn-qr {
            position: absolute;
            right: 60px;
            bottom: 0;
            width: 150px;
            padding: 10px;
            background: white;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.15);
            display: none;
        }

        .float-btn-qr img {
            width: 100%;
            height: auto;
            display: block;
        }

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

        /* 页脚 */
        footer {
            background: #0f172a;
            color: #e2e8f0;
            padding: 60px 0 30px 0;
            font-size: 0.9rem;
        }

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

        .footer-logo-desc p {
            color: #94a3b8;
            margin-top: 12px;
        }

        .footer-col h4 {
            color: white;
            margin-bottom: 20px;
            font-weight: 700;
        }

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

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

        .footer-col ul a {
            color: #94a3b8;
            text-decoration: none;
            transition: color 0.2s;
        }

        .footer-col ul a:hover {
            color: white;
        }

        .footer-bottom {
            border-top: 1px solid #1e293b;
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }

        .friend-links {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .friend-links a {
            color: #64748b;
            text-decoration: none;
            font-size: 0.8rem;
        }

        .friend-links a:hover {
            color: #94a3b8;
        }

        /* 响应式样式适配 */
        @media (max-width: 1024px) {
            .services-grid, .cases-grid, .comments-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .menu-toggle {
                display: flex;
            }

            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: white;
                padding: 20px;
                border-bottom: 1px solid rgba(0,0,0,0.1);
                box-shadow: 0 10px 20px rgba(0,0,0,0.05);
                gap: 10px;
            }

            .nav-menu.active {
                display: flex;
            }

            .hero h1 {
                font-size: 2.2rem;
            }

            .services-grid, .cases-grid, .comments-grid, .stats-grid, .token-grid, .steps-grid {
                grid-template-columns: 1fr;
            }

            .creation-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
        }