:root {
            --primary: #7C3AED;
            --primary-light: #F5F3FF;
            --secondary: #EC4899;
            --accent: #2563EB;
            --dark: #1E293B;
            --light: #F8FAFC;
            --gray: #64748B;
            --border: #E2E8F0;
            --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
            --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
            --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
            --shadow-purple: 0 10px 25px -5px rgba(124, 58, 237, 0.3);
            --gradient: linear-gradient(135deg, #7C3AED 0%, #EC4899 100%);
            --gradient-subtle: linear-gradient(135deg, #F5F3FF 0%, #FDF2F8 100%);
        }

        * {
            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);
            color: var(--dark);
            line-height: 1.6;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: all 0.3s ease;
        }

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

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

        /* 顶部导航 */
        header {
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-sm);
        }

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

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

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

        .logo-text {
            font-size: 1.25rem;
            font-weight: 800;
            background: var(--gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

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

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

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

        .nav-btn {
            background: var(--gradient);
            color: white;
            padding: 8px 18px;
            border-radius: 9999px;
            font-weight: 600;
            box-shadow: var(--shadow-sm);
        }

        .nav-btn:hover {
            color: white;
            box-shadow: var(--shadow-purple);
            transform: translateY(-1px);
        }

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

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

        /* Hero首屏 (无图片) */
        .hero {
            background: var(--gradient-subtle);
            padding: 100px 0 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--border);
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -20%;
            left: -10%;
            width: 50%;
            height: 60%;
            background: radial-gradient(circle, rgba(124, 58, 237, 0.08) 0%, transparent 70%);
            z-index: 1;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -20%;
            right: -10%;
            width: 50%;
            height: 60%;
            background: radial-gradient(circle, rgba(236, 72, 153, 0.08) 0%, transparent 70%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 900px;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-block;
            background-color: white;
            padding: 6px 16px;
            border-radius: 9999px;
            font-size: 0.875rem;
            color: var(--primary);
            font-weight: 600;
            border: 1px solid var(--border);
            margin-bottom: 24px;
            box-shadow: var(--shadow-sm);
        }

        .hero-title-h1 {
            font-size: 2.5rem;
            line-height: 1.25;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 24px;
            letter-spacing: -0.02em;
        }

        .hero-title-h1 span {
            background: var(--gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-description {
            font-size: 1.125rem;
            color: var(--gray);
            margin-bottom: 40px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 48px;
        }

        .btn-primary {
            background: var(--gradient);
            color: white !important;
            padding: 14px 32px;
            border-radius: 8px;
            font-weight: 600;
            box-shadow: var(--shadow-purple);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 30px -5px rgba(124, 58, 237, 0.4);
        }

        .btn-secondary {
            background-color: white;
            color: var(--dark) !important;
            border: 1px solid var(--border);
            padding: 14px 32px;
            border-radius: 8px;
            font-weight: 600;
            box-shadow: var(--shadow-sm);
        }

        .btn-secondary:hover {
            border-color: var(--primary);
            color: var(--primary) !important;
            transform: translateY(-2px);
        }

        /* 数据指标卡片 */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 24px;
            margin-top: 24px;
        }

        .metric-card {
            background: white;
            padding: 24px;
            border-radius: 12px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
        }

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

        .metric-num {
            font-size: 2.25rem;
            font-weight: 800;
            background: var(--gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 8px;
        }

        .metric-label {
            font-size: 0.95rem;
            color: var(--gray);
            font-weight: 500;
        }

        /* 通用布局 */
        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border);
        }

        .section-light {
            background-color: white;
        }

        .section-alt {
            background-color: var(--light);
        }

        .section-header {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 50px auto;
        }

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

        .section-subtitle {
            font-size: 1rem;
            color: var(--gray);
        }

        /* 关于我们与平台介绍 */
        .about-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.5rem;
            margin-bottom: 16px;
            color: var(--primary);
        }

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

        .about-points {
            list-style: none;
        }

        .about-points li {
            position: relative;
            padding-left: 28px;
            margin-bottom: 12px;
            color: var(--dark);
            font-weight: 500;
        }

        .about-points li::before {
            content: "✓";
            position: absolute;
            left: 0;
            top: 0;
            color: var(--secondary);
            font-weight: bold;
            font-size: 1.1rem;
        }

        /* 服务与能力卡片 */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

        .service-card {
            background: white;
            padding: 32px;
            border-radius: 16px;
            border: 1px solid var(--border);
            transition: all 0.3s ease;
            box-shadow: var(--shadow-sm);
        }

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

        .service-icon {
            width: 48px;
            height: 48px;
            background: var(--primary-light);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-weight: bold;
            font-size: 1.5rem;
            margin-bottom: 24px;
        }

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

        .service-desc {
            color: var(--gray);
            font-size: 0.95rem;
            margin-bottom: 16px;
        }

        /* 标签云 */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 15px;
        }

        .tag-item {
            background-color: var(--light);
            color: var(--primary);
            font-size: 0.75rem;
            padding: 4px 10px;
            border-radius: 9999px;
            border: 1px solid var(--border);
        }

        /* 标准化流程步骤 */
        .steps-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 30px;
            position: relative;
        }

        .step-item {
            position: relative;
            background: white;
            padding: 30px;
            border-radius: 12px;
            border: 1px solid var(--border);
            text-align: center;
            box-shadow: var(--shadow-sm);
        }

        .step-num {
            width: 40px;
            height: 40px;
            background: var(--gradient);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            margin: 0 auto 20px auto;
        }

        .step-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .step-desc {
            font-size: 0.9rem;
            color: var(--gray);
        }

        /* 对比评测表格 */
        .comparison-wrapper {
            overflow-x: auto;
            border-radius: 12px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            background: white;
        }

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

        .comparison-table th, .comparison-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border);
        }

        .comparison-table th {
            background-color: var(--primary-light);
            color: var(--dark);
            font-weight: 700;
        }

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

        .comparison-table tbody tr:hover {
            background-color: var(--light);
        }

        .badge-pro {
            background: var(--gradient);
            color: white;
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: 600;
        }

        /* Token 比价 */
        .token-price-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }

        .token-card {
            background: white;
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 24px;
            box-shadow: var(--shadow-sm);
        }

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

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

        .token-price {
            color: var(--secondary);
            font-weight: 800;
            font-size: 1.25rem;
        }

        /* 案例展示区 */
        .portfolio-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .portfolio-card {
            background: white;
            border-radius: 12px;
            border: 1px solid var(--border);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
        }

        .portfolio-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }

        .portfolio-img-wrapper {
            position: relative;
            background-color: var(--primary-light);
            aspect-ratio: 16/9;
            overflow: hidden;
        }

        .portfolio-img-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .portfolio-info {
            padding: 24px;
        }

        .portfolio-tag {
            background-color: var(--primary-light);
            color: var(--primary);
            font-size: 0.8rem;
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 600;
            display: inline-block;
            margin-bottom: 12px;
        }

        .portfolio-title {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--dark);
        }

        .portfolio-desc {
            color: var(--gray);
            font-size: 0.9rem;
        }

        /* 微信客服及联系我们 */
        .contact-layout {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
        }

        .contact-form-card {
            background: white;
            padding: 40px;
            border-radius: 16px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }

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

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

        .form-input, .form-select, .form-textarea {
            width: 100%;
            padding: 12px;
            border: 1px solid var(--border);
            border-radius: 8px;
            font-size: 0.95rem;
            background-color: var(--light);
            transition: all 0.3s;
        }

        .form-input:focus, .form-select:focus, .form-textarea:focus {
            outline: none;
            border-color: var(--primary);
            background-color: white;
            box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.15);
        }

        .contact-info-card {
            background: var(--gradient-subtle);
            padding: 40px;
            border-radius: 16px;
            border: 1px solid var(--border);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .contact-method {
            margin-bottom: 24px;
        }

        .contact-method h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--dark);
        }

        .contact-method p {
            color: var(--gray);
            font-size: 0.95rem;
        }

        .qr-wrapper {
            margin-top: 20px;
            padding: 16px;
            background: white;
            border-radius: 12px;
            border: 1px solid var(--border);
            display: inline-block;
            max-width: 180px;
        }

        .qr-wrapper img {
            width: 100%;
            height: auto;
        }

        /* 客户评论卡片 */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 24px;
        }

        .testimonial-card {
            background: white;
            border-radius: 12px;
            border: 1px solid var(--border);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            position: relative;
        }

        .testimonial-quote {
            color: var(--gray);
            font-size: 0.95rem;
            margin-bottom: 20px;
            font-style: italic;
        }

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

        .user-avatar {
            width: 44px;
            height: 44px;
            background: var(--primary-light);
            color: var(--primary);
            font-weight: bold;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .user-info h4 {
            font-size: 0.95rem;
            font-weight: 700;
        }

        .user-info p {
            font-size: 0.8rem;
            color: var(--gray);
        }

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

        .faq-item {
            background: white;
            border: 1px solid var(--border);
            border-radius: 8px;
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .faq-btn {
            width: 100%;
            padding: 18px 24px;
            background: none;
            border: none;
            text-align: left;
            font-size: 1rem;
            font-weight: 700;
            color: var(--dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: background-color 0.3s;
        }

        .faq-btn:hover {
            background-color: var(--primary-light);
        }

        .faq-btn::after {
            content: '+';
            font-size: 1.5rem;
            color: var(--primary);
            font-weight: 300;
            transition: transform 0.3s;
        }

        .faq-item.active .faq-btn::after {
            content: '-';
            transform: rotate(180deg);
        }

        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background-color: white;
        }

        .faq-content p {
            padding: 0 24px 20px 24px;
            color: var(--gray);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        /* 知识库/资讯 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }

        .news-card {
            background: white;
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 24px;
            box-shadow: var(--shadow-sm);
        }

        .news-date {
            font-size: 0.8rem;
            color: var(--gray);
            margin-bottom: 8px;
        }

        .news-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .news-title a {
            color: var(--dark);
        }

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

        /* 页脚与友情链接 */
        footer {
            background-color: var(--dark);
            color: #94A3B8;
            padding: 60px 0 20px 0;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-col h3 {
            color: white;
            font-size: 1.1rem;
            margin-bottom: 20px;
            font-weight: 700;
        }

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

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

        .footer-links a {
            color: #94A3B8;
        }

        .footer-links a:hover {
            color: white;
        }

        .friend-links-area {
            border-top: 1px solid #334155;
            border-bottom: 1px solid #334155;
            padding: 20px 0;
            margin-bottom: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }

        .friend-links-area span {
            color: white;
            font-weight: 600;
        }

        .friend-links-area a {
            color: #94A3B8;
            font-size: 0.85rem;
        }

        .friend-links-area a:hover {
            color: white;
        }

        .copyright-area {
            text-align: center;
            font-size: 0.8rem;
            color: #64748B;
        }

        /* 侧边浮动工具栏 */
        .floating-sidebar {
            position: fixed;
            right: 20px;
            bottom: 40px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .float-item {
            width: 50px;
            height: 50px;
            background: white;
            border: 1px solid var(--border);
            border-radius: 50%;
            box-shadow: var(--shadow-lg);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s;
            position: relative;
        }

        .float-item:hover {
            background: var(--primary);
            color: white;
            transform: scale(1.1);
        }

        .float-item svg {
            width: 24px;
            height: 24px;
            fill: currentColor;
        }

        .float-item .popover {
            position: absolute;
            bottom: 0;
            right: 60px;
            background: white;
            border: 1px solid var(--border);
            padding: 16px;
            border-radius: 12px;
            box-shadow: var(--shadow-lg);
            display: none;
            text-align: center;
            min-width: 150px;
            color: var(--dark);
        }

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

        /* 响应式调整 */
        @media (max-width: 992px) {
            .hero-title-h1 {
                font-size: 2rem;
            }
            .about-layout {
                grid-template-columns: 1fr;
            }
            .contact-layout {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: white;
                border-bottom: 1px solid var(--border);
                padding: 20px;
                box-shadow: var(--shadow);
            }

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

            .menu-toggle {
                display: flex;
            }

            .hero-title-h1 {
                font-size: 1.75rem;
            }
        }