/* CSS Reset & Variable Definitions */
        :root {
            --primary: #ff6b8b; /* 糖果粉 */
            --secondary: #4ea8de; /* 马卡龙蓝 */
            --accent: #ffd166; /* 蜜桃黄 */
            --success: #06d6a0; /* 薄荷绿 */
            --purple: #a2d2ff; /* 薰衣草紫 */
            --text-main: #2b2d42; /* 深石板灰 */
            --text-muted: #5c5f73;
            --bg-main: #fafbfe;
            --bg-gradient: linear-gradient(135deg, #f7f9fc 0%, #fff0f5 50%, #eef7ff 100%);
            --card-shadow: 0 15px 30px rgba(255, 107, 139, 0.08);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--text-main);
            background: var(--bg-main);
        }

        body {
            background: var(--bg-gradient);
            background-attachment: fixed;
            line-height: 1.6;
            overflow-x: hidden;
        }

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

        /* Typography */
        h1, h2, h3, h4 {
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.3;
        }

        .section-title {
            text-align: center;
            font-size: 2.2rem;
            margin-bottom: 15px;
            position: relative;
            background: linear-gradient(45deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .section-subtitle {
            text-align: center;
            font-size: 1.1rem;
            color: var(--text-muted);
            margin-bottom: 50px;
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 30px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            text-decoration: none;
            transition: var(--transition);
            cursor: pointer;
            border: none;
            box-shadow: 0 4px 15px rgba(0,0,0,0.05);
        }

        .btn-primary {
            background: linear-gradient(45deg, var(--primary), #ff8fa3);
            color: #fff !important;
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(255, 107, 139, 0.4);
        }

        .btn-secondary {
            background: linear-gradient(45deg, var(--secondary), #70e000);
            color: #fff !important;
        }

        .btn-secondary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(78, 168, 222, 0.4);
        }

        /* Header Navigation */
        header {
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(10px);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0,0,0,0.02);
            border-bottom: 1px solid rgba(255,255,255,0.4);
        }

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

        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
        }

        .logo-area span {
            font-size: 1.3rem;
            font-weight: 800;
            background: linear-gradient(45deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        nav {
            display: flex;
            align-items: center;
            gap: 20px;
        }

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

        .nav-link {
            color: var(--text-main);
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 600;
            transition: var(--transition);
            padding: 5px 10px;
            border-radius: 8px;
        }

        .nav-link:hover {
            color: var(--primary);
            background: rgba(255, 107, 139, 0.08);
        }

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

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

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

        /* Hero Section (No Image) */
        .hero {
            padding: 180px 0 100px;
            text-align: center;
            position: relative;
            background: radial-gradient(circle at 10% 20%, rgba(255, 209, 102, 0.15) 0%, rgba(162, 210, 255, 0.15) 90%);
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 20%;
            left: 5%;
            width: 80px;
            height: 80px;
            background: var(--purple);
            border-radius: 50%;
            filter: blur(40px);
            opacity: 0.6;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: 10%;
            right: 5%;
            width: 120px;
            height: 120px;
            background: var(--primary);
            border-radius: 50%;
            filter: blur(60px);
            opacity: 0.4;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(255, 107, 139, 0.1);
            color: var(--primary);
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 700;
            margin-bottom: 20px;
            border: 1px solid rgba(255, 107, 139, 0.2);
        }

        .hero h1 {
            font-size: 3rem;
            margin-bottom: 20px;
            font-weight: 900;
            letter-spacing: -1px;
            background: linear-gradient(45deg, var(--text-main), var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 1.25rem;
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto 40px;
        }

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

        /* Stats Section */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 25px;
            margin-top: -40px;
            position: relative;
            z-index: 10;
        }

        .stat-card {
            background: #fff;
            padding: 30px 20px;
            border-radius: 20px;
            text-align: center;
            box-shadow: var(--card-shadow);
            border: 1px solid rgba(255, 255, 255, 0.8);
            transition: var(--transition);
        }

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

        .stat-num {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 5px;
        }

        .stat-label {
            font-size: 0.95rem;
            color: var(--text-muted);
            font-weight: 600;
        }

        /* General Section Layout */
        section {
            padding: 90px 0;
        }

        /* Platform Intro (About us) */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .about-content h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
            color: var(--primary);
        }

        .about-text {
            color: var(--text-muted);
            font-size: 1.05rem;
            margin-bottom: 30px;
        }

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

        .feat-item {
            background: #fff;
            padding: 20px;
            border-radius: 16px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.02);
            border-left: 4px solid var(--secondary);
        }

        .feat-item h4 {
            font-size: 1rem;
            margin-bottom: 5px;
        }

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

        /* Services Grid */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }

        .service-card {
            background: #fff;
            padding: 40px 30px;
            border-radius: 24px;
            box-shadow: var(--card-shadow);
            border: 1px solid rgba(255,255,255,0.7);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 6px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
        }

        .service-card:hover {
            transform: translateY(-8px);
        }

        .service-icon {
            width: 60px;
            height: 60px;
            border-radius: 16px;
            background: rgba(78, 168, 222, 0.1);
            color: var(--secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            margin-bottom: 25px;
        }

        .service-card:nth-child(even) .service-icon {
            background: rgba(255, 107, 139, 0.1);
            color: var(--primary);
        }

        .service-card h3 {
            font-size: 1.3rem;
            margin-bottom: 15px;
        }

        .service-card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .service-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .service-tag {
            font-size: 0.75rem;
            padding: 4px 10px;
            background: #f0f3f6;
            color: var(--text-muted);
            border-radius: 20px;
            font-weight: 600;
        }

        /* Model Aggregation Badge Cloud */
        .badge-cloud {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
            max-width: 900px;
            margin: 0 auto;
        }

        .cloud-badge {
            background: #fff;
            padding: 8px 18px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--text-main);
            box-shadow: 0 4px 12px rgba(0,0,0,0.03);
            border: 1px solid rgba(0,0,0,0.05);
            transition: var(--transition);
        }

        .cloud-badge:hover {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }

        /* Process Steps */
        .process-flow {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            position: relative;
        }

        .process-step {
            background: #fff;
            padding: 30px 20px;
            border-radius: 20px;
            text-align: center;
            box-shadow: 0 10px 25px rgba(0,0,0,0.02);
            position: relative;
        }

        .step-num {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--accent);
            color: var(--text-main);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            margin: -50px auto 20px;
            border: 4px solid var(--bg-main);
            box-shadow: 0 4px 10px rgba(0,0,0,0.1);
        }

        .process-step h4 {
            margin-bottom: 10px;
        }

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

        /* Comparison Section */
        .comparison-table-wrapper {
            background: #fff;
            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 20px;
            border-bottom: 1px solid #f0f3f6;
        }

        .comparison-table th {
            background: #fafbfe;
            font-weight: 700;
        }

        .comparison-table tr:hover {
            background: rgba(162, 210, 255, 0.05);
        }

        .highlight-col {
            background: rgba(255, 107, 139, 0.03);
            font-weight: 700;
            color: var(--primary);
        }

        .rating-box {
            background: linear-gradient(135deg, var(--primary), var(--purple));
            color: #fff;
            padding: 30px;
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: space-around;
            margin-bottom: 40px;
            flex-wrap: wrap;
            gap: 20px;
        }

        .rating-score {
            text-align: center;
        }

        .rating-score .num {
            font-size: 3.5rem;
            font-weight: 900;
        }

        /* Token Price Reference Section */
        .token-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
        }

        .token-card {
            background: #fff;
            border-radius: 16px;
            padding: 20px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.02);
            border: 1px solid #f0f3f6;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .token-info h4 {
            font-size: 1.1rem;
            margin-bottom: 4px;
        }

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

        .token-price {
            text-align: right;
        }

        .price-val {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--success);
        }

        /* Timeline for Training */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
        }

        .timeline::before {
            content: '';
            position: absolute;
            top: 0;
            bottom: 0;
            left: 50%;
            width: 4px;
            background: var(--purple);
            transform: translateX(-50%);
        }

        .timeline-item {
            position: relative;
            width: 50%;
            padding: 20px 40px;
        }

        .timeline-item::after {
            content: '';
            position: absolute;
            width: 20px;
            height: 20px;
            background: var(--accent);
            border: 4px solid #fff;
            border-radius: 50%;
            top: 25px;
            right: -12px;
            z-index: 1;
        }

        .timeline-item:nth-child(even) {
            left: 50%;
        }

        .timeline-item:nth-child(even)::after {
            left: -12px;
        }

        .timeline-content {
            background: #fff;
            padding: 25px;
            border-radius: 20px;
            box-shadow: var(--card-shadow);
        }

        /* Customer Reviews Grid */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .review-card {
            background: #fff;
            padding: 30px;
            border-radius: 20px;
            box-shadow: var(--card-shadow);
            border: 1px solid rgba(255,255,255,0.8);
        }

        .review-stars {
            color: var(--accent);
            margin-bottom: 15px;
        }

        .review-text {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .review-user {
            display: flex;
            align-items: center;
            gap: 12px;
        }

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

        .user-meta h4 {
            font-size: 0.95rem;
        }

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

        /* Case & Media Center */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .case-card {
            background: #fff;
            border-radius: 24px;
            overflow: hidden;
            box-shadow: var(--card-shadow);
        }

        .case-img-box {
            position: relative;
            background: #eaeaea;
            overflow: hidden;
        }

        .case-img-box img {
            width: 100%;
            display: block;
            object-fit: cover;
            transition: var(--transition);
        }

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

        .case-body {
            padding: 25px;
        }

        .case-body h3 {
            font-size: 1.25rem;
            margin-bottom: 10px;
        }

        /* Article List style */
        .article-list {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
        }

        .article-list li {
            background: #fff;
            padding: 15px 20px;
            border-radius: 12px;
            box-shadow: 0 4px 10px rgba(0,0,0,0.01);
            transition: var(--transition);
        }

        .article-list li:hover {
            transform: translateX(5px);
            background: rgba(162, 210, 255, 0.05);
        }

        .article-list a {
            color: var(--text-main);
            text-decoration: none;
            font-weight: 600;
            display: block;
        }

        /* FAQ Accordion */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .faq-item {
            background: #fff;
            border-radius: 16px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.01);
            overflow: hidden;
        }

        .faq-trigger {
            width: 100%;
            padding: 20px;
            text-align: left;
            background: none;
            border: none;
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-main);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
        }

        .faq-trigger::after {
            content: '+';
            font-size: 1.5rem;
            color: var(--primary);
            transition: var(--transition);
        }

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

        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            padding: 0 20px;
        }

        .faq-content p {
            padding-bottom: 20px;
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* Form Section */
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 50px;
            align-items: start;
        }

        .contact-info {
            background: #fff;
            padding: 40px;
            border-radius: 24px;
            box-shadow: var(--card-shadow);
        }

        .qr-box {
            display: flex;
            align-items: center;
            gap: 20px;
            margin-top: 30px;
        }

        .qr-box img {
            width: 120px;
            height: 120px;
            border-radius: 12px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.05);
        }

        .form-box {
            background: #fff;
            padding: 40px;
            border-radius: 24px;
            box-shadow: var(--card-shadow);
        }

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

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

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border-radius: 12px;
            border: 2px solid #eef2f6;
            background: #fdfdfd;
            font-size: 1rem;
            transition: var(--transition);
        }

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

        /* Footer & Partners */
        .partners-bar {
            background: #fff;
            padding: 30px 0;
            border-top: 1px solid #eee;
            border-bottom: 1px solid #eee;
            text-align: center;
        }

        .partners-wrap {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 40px;
            flex-wrap: wrap;
            opacity: 0.7;
        }

        .partners-wrap span {
            font-weight: 800;
            font-size: 1.1rem;
            color: var(--text-muted);
        }

        footer {
            background: #1d1e2c;
            color: #d1d2dc;
            padding: 80px 0 30px;
        }

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

        .footer-col h4 {
            color: #fff;
            margin-bottom: 20px;
            font-size: 1.1rem;
        }

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

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

        .footer-col a {
            color: #a5a6b5;
            text-decoration: none;
            transition: var(--transition);
        }

        .footer-col a:hover {
            color: var(--primary);
        }

        .footer-bottom {
            border-top: 1px solid #2d2f44;
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 0.9rem;
        }

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
        }

        .friend-links a {
            color: #a5a6b5;
            text-decoration: none;
        }

        .friend-links a:hover {
            color: var(--primary);
        }

        /* Floating Sidebar */
        .floating-sidebar {
            position: fixed;
            right: 20px;
            bottom: 40px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: #fff;
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            text-decoration: none;
            color: var(--text-main);
            transition: var(--transition);
            font-size: 1.2rem;
            position: relative;
        }

        .float-btn:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }

        .float-qr-hover {
            position: absolute;
            right: 60px;
            bottom: 0;
            background: #fff;
            padding: 15px;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.15);
            display: none;
            text-align: center;
        }

        .float-qr-hover img {
            width: 120px;
            height: 120px;
        }

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

        /* Responsive Design */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .reviews-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: #fff;
                box-shadow: 0 10px 20px rgba(0,0,0,0.05);
                padding: 20px;
                gap: 15px;
                border-bottom: 2px solid var(--primary);
            }

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

            .menu-toggle {
                display: flex;
            }

            .about-grid, .contact-grid, .case-grid {
                grid-template-columns: 1fr;
            }

            .process-flow {
                grid-template-columns: 1fr;
                gap: 50px;
            }

            .timeline::before {
                left: 20px;
            }

            .timeline-item {
                width: 100%;
                padding-left: 50px;
                padding-right: 0;
            }

            .timeline-item:nth-child(even) {
                left: 0;
            }

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

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

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

            .article-list {
                grid-template-columns: 1fr;
            }
        }