/* 缤纷糖果亮色风 主题 CSS */
        :root {
            --primary-grad: linear-gradient(135deg, #ff4e50 0%, #f9d423 100%);
            --secondary-grad: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
            --accent-grad: linear-gradient(135deg, #00c6ff 0%, #0072ff 100%);
            --candy-pink: #ff007a;
            --candy-purple: #7928ca;
            --candy-blue: #0070f3;
            --candy-yellow: #ffb703;
            --candy-green: #06d6a0;
            --bg-light: #fbfbfe;
            --card-bg: #ffffff;
            --text-dark: #1e293b;
            --text-muted: #64748b;
            --border-color: #e2e8f0;
            --radius-lg: 20px;
            --radius-md: 12px;
            --shadow-soft: 0 10px 30px rgba(121, 40, 202, 0.08);
            --shadow-hover: 0 20px 40px rgba(255, 0, 122, 0.15);
            --container-width: 1200px;
        }

        * {
            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;
            background-color: var(--bg-light);
            color: var(--text-dark);
            line-height: 1.6;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

        /* 统一容器 */
        .container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
        }

        /* 顶栏与导航 */
        .header-site {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.8);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
        }

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

        .ai-page-logo {
            max-height: 44px;
            width: auto;
            display: block;
        }

        .brand-title-sub {
            font-size: 1.1rem;
            font-weight: 800;
            background: var(--candy-purple);
            background: linear-gradient(45deg, var(--candy-pink), var(--candy-purple));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 0; /* 严格按照要求设置为 0 */
            list-style: none;
        }

        .nav-item {
            position: relative;
        }

        .nav-link {
            display: block;
            padding: 8px 14px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-dark);
            transition: all 0.25s ease;
            border-radius: 8px;
        }

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

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 24px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.95rem;
            cursor: pointer;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            border: none;
            outline: none;
            box-shadow: var(--shadow-soft);
        }

        .btn-primary {
            background: var(--primary-grad);
            color: #ffffff;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(255, 78, 80, 0.35);
        }

        .btn-accent {
            background: var(--secondary-grad);
            color: #ffffff;
        }

        .btn-accent:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(106, 17, 203, 0.35);
        }

        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--text-dark);
        }

        /* 统一标题样式 */
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-tag {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 30px;
            background: rgba(121, 40, 202, 0.08);
            color: var(--candy-purple);
            font-weight: 700;
            font-size: 0.85rem;
            margin-bottom: 12px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 14px;
            line-height: 1.3;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 700px;
            margin: 0 auto;
        }

        /* 首屏 Hero 区域 (绝无图片) */
        .hero-section {
            padding: 80px 0 60px 0;
            background: radial-gradient(circle at 10% 20%, rgba(255, 230, 240, 0.8) 0%, rgba(240, 244, 255, 0.8) 50%, rgba(255, 250, 235, 0.8) 100%);
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid rgba(226, 232, 240, 0.6);
        }

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

        .hero-h1 {
            font-size: 2.5rem;
            font-weight: 900;
            line-height: 1.25;
            margin-bottom: 20px;
            color: #0f172a;
        }

        .hero-h1 span {
            background: linear-gradient(135deg, var(--candy-pink), var(--candy-purple));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 1.15rem;
            color: #475569;
            margin-bottom: 30px;
        }

        .hero-btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 40px;
        }

        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .hero-badge-item {
            background: #ffffff;
            padding: 8px 16px;
            border-radius: 12px;
            font-size: 0.88rem;
            font-weight: 600;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.04);
            border: 1px solid #f1f5f9;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .hero-badge-item i {
            color: var(--candy-pink);
            font-style: normal;
        }

        .hero-code-box {
            background: #1e1b4b;
            color: #e0e7ff;
            padding: 30px;
            border-radius: var(--radius-lg);
            box-shadow: 0 20px 40px rgba(30, 27, 75, 0.2);
            border: 2px solid rgba(255, 255, 255, 0.1);
            position: relative;
        }

        .hero-code-header {
            display: flex;
            gap: 8px;
            margin-bottom: 20px;
        }

        .dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
        }

        .dot-red { background: #ef4444; }
        .dot-yellow { background: #f59e0b; }
        .dot-green { background: #10b981; }

        .hero-code-body {
            font-family: monospace;
            font-size: 0.92rem;
            line-height: 1.8;
        }

        .code-keyword { color: #f472b6; }
        .code-func { color: #38bdf8; }
        .code-string { color: #34d399; }

        /* 数据指标 */
        .stats-section {
            padding: 50px 0;
            background: #ffffff;
        }

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

        .stat-card {
            background: linear-gradient(135deg, #fff5f8 0%, #fff 100%);
            border: 1px solid #ffe4e6;
            padding: 24px;
            border-radius: var(--radius-md);
            text-align: center;
            transition: transform 0.3s ease;
        }

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

        .stat-number {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--candy-pink);
            margin-bottom: 6px;
        }

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

        /* 基础 Section 布局 */
        .section-padding {
            padding: 70px 0;
        }

        /* 关于平台 */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .about-card-box {
            background: #ffffff;
            border-radius: var(--radius-lg);
            padding: 36px;
            box-shadow: var(--shadow-soft);
            border: 1px solid var(--border-color);
        }

        .about-list {
            list-style: none;
            margin-top: 20px;
        }

        .about-list li {
            position: relative;
            padding-left: 28px;
            margin-bottom: 14px;
            font-size: 1rem;
            color: #334155;
        }

        .about-list li::before {
            content: "✓";
            position: absolute;
            left: 0;
            top: 0;
            color: var(--candy-green);
            font-weight: 900;
            font-size: 1.1rem;
        }

        /* 服务能力卡片 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }

        .service-card {
            background: #ffffff;
            border-radius: var(--radius-md);
            padding: 28px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-soft);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(255, 0, 122, 0.3);
        }

        .service-icon-box {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: var(--primary-grad);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 1.2rem;
            margin-bottom: 18px;
        }

        .service-title {
            font-size: 1.2rem;
            font-weight: 800;
            margin-bottom: 10px;
            color: var(--text-dark);
        }

        .service-desc {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 支持模型标签云 */
        .models-box {
            background: #ffffff;
            border-radius: var(--radius-lg);
            padding: 30px;
            box-shadow: var(--shadow-soft);
            border: 1px solid var(--border-color);
            margin-top: 30px;
        }

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

        .model-tag {
            background: #f1f5f9;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            color: #334155;
            transition: all 0.2s ease;
        }

        .model-tag:hover {
            background: var(--candy-pink);
            color: #fff;
        }

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

        .step-card {
            background: #ffffff;
            padding: 30px 20px;
            border-radius: var(--radius-md);
            text-align: center;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-soft);
            position: relative;
        }

        .step-num {
            width: 40px;
            height: 40px;
            background: var(--secondary-grad);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            margin: 0 auto 16px auto;
        }

        /* 对比评测样式 (重点要求) */
        .compare-box {
            background: #ffffff;
            border-radius: var(--radius-lg);
            padding: 36px;
            box-shadow: var(--shadow-soft);
            border: 1px solid var(--border-color);
            overflow-x: auto;
        }

        .rating-banner {
            background: linear-gradient(135deg, #fff3c4 0%, #fce7f3 100%);
            padding: 20px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 30px;
            border: 1px solid #fbcfe8;
        }

        .rating-stars {
            font-size: 1.5rem;
            color: #f59e0b;
        }

        .rating-score {
            font-size: 2rem;
            font-weight: 900;
            color: var(--candy-pink);
        }

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

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

        .compare-table th {
            background: #f8fafc;
            font-size: 1rem;
            font-weight: 800;
        }

        .compare-table tr:hover {
            background: #fdf2f8;
        }

        .highlight-col {
            background: rgba(255, 0, 122, 0.03);
            font-weight: 700;
            color: var(--candy-pink);
        }

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

        .token-card {
            background: #ffffff;
            border-radius: var(--radius-md);
            padding: 24px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-soft);
            text-align: center;
        }

        .token-price {
            font-size: 1.8rem;
            font-weight: 900;
            color: var(--candy-purple);
            margin: 12px 0;
        }

        /* 案例中心 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .case-card {
            background: #ffffff;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-soft);
        }

        .case-img-wrap {
            overflow: hidden;
            max-height: 200px;
        }

        .case-img-wrap img {
            width: 100%;
            height: auto;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

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

        .case-content {
            padding: 20px;
        }

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

        .review-card {
            background: #ffffff;
            padding: 24px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-soft);
            position: relative;
        }

        .review-user {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 16px;
        }

        .avatar-circle {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary-grad);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
        }

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

        .user-role {
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        /* FAQ 手风琴 */
        .faq-list {
            max-width: 900px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: #ffffff;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.02);
        }

        .faq-question {
            padding: 20px;
            font-weight: 700;
            font-size: 1.05rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
            background: #ffffff;
        }

        .faq-answer {
            padding: 0 20px 20px 20px;
            color: #475569;
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
            border-top: 1px dashed #f1f5f9;
        }

        .faq-item.active .faq-answer {
            display: block;
        }

        .faq-toggle {
            font-weight: 900;
            color: var(--candy-pink);
            font-size: 1.2rem;
        }

        /* 表单与联系我们 */
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .contact-info-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            padding: 36px;
            box-shadow: var(--shadow-soft);
            border: 1px solid var(--border-color);
        }

        .qr-box {
            margin-top: 20px;
            text-align: center;
            padding: 20px;
            background: #f8fafc;
            border-radius: var(--radius-md);
        }

        .qr-box img {
            max-width: 160px;
            border-radius: 8px;
        }

        .form-box {
            background: #ffffff;
            border-radius: var(--radius-lg);
            padding: 36px;
            box-shadow: var(--shadow-soft);
            border: 1px solid var(--border-color);
        }

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

        .form-label {
            display: block;
            font-weight: 700;
            margin-bottom: 8px;
            font-size: 0.92rem;
        }

        .form-input, .form-select, .form-textarea {
            width: 100%;
            padding: 12px 16px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            outline: none;
            font-size: 0.95rem;
            transition: border-color 0.2s ease;
        }

        .form-input:focus, .form-select:focus, .form-textarea:focus {
            border-color: var(--candy-pink);
        }

        .form-textarea {
            height: 110px;
            resize: vertical;
        }

        /* 文章列表与友情链接 */
        .articles-box {
            background: #ffffff;
            border-radius: var(--radius-md);
            padding: 24px;
            border: 1px solid var(--border-color);
            margin-bottom: 30px;
        }

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

        .articles-list a {
            color: var(--candy-blue);
            font-weight: 600;
            transition: color 0.2s ease;
        }

        .articles-list a:hover {
            color: var(--candy-pink);
        }

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        .friend-links a {
            color: #475569;
            background: #f1f5f9;
            padding: 6px 14px;
            border-radius: 6px;
            transition: all 0.2s ease;
        }

        .friend-links a:hover {
            background: var(--candy-purple);
            color: #fff;
        }

        /* 页脚 */
        .footer-site {
            background: #0f172a;
            color: #94a3b8;
            padding: 60px 0 30px 0;
            border-top: 1px solid #1e293b;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 30px;
            margin-bottom: 40px;
        }

        .footer-title {
            color: #ffffff;
            font-weight: 800;
            font-size: 1.1rem;
            margin-bottom: 18px;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
            font-size: 0.9rem;
        }

        .footer-links a:hover {
            color: #ffffff;
        }

        .copyright-bar {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid #1e293b;
            font-size: 0.88rem;
        }

        /* 浮动客服入口 */
        .floating-kefu {
            position: fixed;
            right: 20px;
            bottom: 30px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .kefu-btn {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--candy-pink);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 10px 25px rgba(255, 0, 122, 0.4);
            font-weight: 800;
            font-size: 0.85rem;
            cursor: pointer;
            transition: transform 0.3s ease;
        }

        .kefu-btn:hover {
            transform: scale(1.1);
        }

        /* 响应式调整 */
        @media (max-width: 992px) {
            .hero-grid, .about-grid, .contact-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid, .process-steps, .token-grid, .cases-grid, .reviews-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 76px;
                left: 0;
                width: 100%;
                background: #ffffff;
                padding: 20px;
                box-shadow: 0 10px 20px rgba(0,0,0,0.1);
            }
            .nav-links.active {
                display: flex;
            }
            .mobile-menu-btn {
                display: block;
            }
        }

        @media (max-width: 576px) {
            .stats-grid, .process-steps, .token-grid, .cases-grid, .reviews-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .hero-h1 {
                font-size: 1.8rem;
            }
            .section-title {
                font-size: 1.6rem;
            }
        }