/* 变量定义：薄荷绿清新风 */
        :root {
            --primary: #10b981;
            --primary-hover: #059669;
            --primary-light: #e6fcf5;
            --secondary: #34d399;
            --dark: #1f2937;
            --dark-light: #4b5563;
            --light: #f9fafb;
            --white: #ffffff;
            --border: #e5e7eb;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.02);
            --transition: all 0.3s ease;
        }

        /* 基础重置 */
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans CJK SC", sans-serif;
            background-color: var(--light);
            color: var(--dark);
            line-height: 1.6;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, select, textarea {
            font-family: inherit;
        }

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

        /* 导航栏 */
        header {
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }
        .logo-box {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .ai-page-logo {
            height: 40px;
            width: auto;
        }
        .logo-text {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--primary-hover);
        }
        .nav-links {
            display: flex;
            gap: 20px;
            list-style: none;
            align-items: center;
        }
        .nav-links a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--dark-light);
            padding: 5px 10px;
            border-radius: 4px;
        }
        .nav-links a:hover {
            color: var(--primary);
            background-color: var(--primary-light);
        }
        .nav-cta {
            background-color: var(--primary);
            color: var(--white) !important;
            padding: 8px 18px !important;
            border-radius: 20px !important;
            font-weight: 600 !important;
            box-shadow: 0 4px 10px rgba(16, 185, 129, 0.2);
        }
        .nav-cta:hover {
            background-color: var(--primary-hover) !important;
            color: var(--white) !important;
        }
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--dark);
        }

        /* 纯文本首屏 Hero Area (无背景图) */
        .hero {
            padding: 160px 0 80px;
            background: radial-gradient(circle at top right, #d1fae5 0%, #ffffff 60%);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .hero-badge {
            display: inline-block;
            background-color: var(--primary-light);
            color: var(--primary-hover);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 20px;
            border: 1px solid rgba(16, 185, 129, 0.2);
        }
        .hero h1 {
            font-size: 2.5rem;
            font-weight: 800;
            line-height: 1.25;
            color: var(--dark);
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        .hero-desc {
            font-size: 1.15rem;
            color: var(--dark-light);
            max-width: 800px;
            margin: 0 auto 35px;
        }
        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-bottom: 50px;
        }
        .btn {
            display: inline-block;
            padding: 12px 28px;
            border-radius: 8px;
            font-weight: 600;
            text-align: center;
            cursor: pointer;
            transition: var(--transition);
        }
        .btn-primary {
            background-color: var(--primary);
            color: var(--white);
            box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
        }
        .btn-primary:hover {
            background-color: var(--primary-hover);
            transform: translateY(-2px);
        }
        .btn-secondary {
            background-color: var(--white);
            color: var(--dark);
            border: 1px solid var(--border);
        }
        .btn-secondary:hover {
            background-color: var(--light);
            transform: translateY(-2px);
        }
        .hero-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            max-width: 900px;
            margin: 0 auto;
            background: var(--white);
            padding: 25px;
            border-radius: 16px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border);
        }
        .stat-item h3 {
            font-size: 1.75rem;
            color: var(--primary-hover);
            font-weight: 700;
        }
        .stat-item p {
            font-size: 0.85rem;
            color: var(--dark-light);
            margin-top: 5px;
        }

        /* 页面板块共用 */
        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border);
        }
        .section-light {
            background-color: var(--white);
        }
        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 50px;
        }
        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }
        .section-header h2::after {
            content: '';
            display: block;
            width: 50px;
            height: 4px;
            background-color: var(--primary);
            margin: 10px auto 0;
            border-radius: 2px;
        }
        .section-header p {
            color: var(--dark-light);
            font-size: 1rem;
        }

        /* 关于我们 & 软件介绍 */
        .about-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 50px;
            align-items: center;
        }
        .about-content h3 {
            font-size: 1.5rem;
            color: var(--dark);
            margin-bottom: 15px;
        }
        .about-content p {
            color: var(--dark-light);
            margin-bottom: 20px;
            text-align: justify;
        }
        .about-features {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
        }
        .about-feat-item {
            background-color: var(--light);
            padding: 15px;
            border-radius: 8px;
            border-left: 4px solid var(--primary);
        }
        .about-feat-item h4 {
            font-size: 0.95rem;
            margin-bottom: 5px;
        }
        .about-feat-item p {
            font-size: 0.8rem;
            margin-bottom: 0;
            color: var(--dark-light);
        }
        .about-badge-card {
            background: linear-gradient(135deg, var(--primary-light) 0%, #d1fae5 100%);
            padding: 40px;
            border-radius: 20px;
            border: 1px solid rgba(16, 185, 129, 0.2);
            text-align: center;
        }
        .about-badge-card h4 {
            font-size: 1.75rem;
            color: var(--primary-hover);
            margin-bottom: 10px;
        }
        .about-badge-card p {
            font-size: 0.95rem;
            color: var(--dark-light);
            margin-bottom: 20px;
        }

        /* 平台服务体系 (聚合平台展示) */
        .platform-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
            gap: 12px;
            margin-top: 30px;
        }
        .platform-tag {
            background-color: var(--white);
            border: 1px solid var(--border);
            padding: 10px 5px;
            border-radius: 8px;
            text-align: center;
            font-size: 0.85rem;
            font-weight: 500;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .platform-tag:hover {
            border-color: var(--primary);
            background-color: var(--primary-light);
            transform: translateY(-2px);
        }

        /* 制作流程 & 时间线 */
        .process-flow {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }
        .process-step {
            background-color: var(--white);
            padding: 30px 20px;
            border-radius: 12px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            text-align: center;
            position: relative;
        }
        .process-step::after {
            content: '➔';
            position: absolute;
            right: -15px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--primary);
            font-size: 1.5rem;
            z-index: 2;
        }
        .process-step:last-child::after {
            display: none;
        }
        .step-num {
            width: 40px;
            height: 40px;
            background-color: var(--primary-light);
            color: var(--primary-hover);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            margin: 0 auto 15px;
        }
        .process-step h3 {
            font-size: 1.1rem;
            margin-bottom: 10px;
        }
        .process-step p {
            font-size: 0.85rem;
            color: var(--dark-light);
        }

        /* 行业解决方案与服务网络 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }
        .solution-card {
            background-color: var(--white);
            border-radius: 12px;
            padding: 30px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .solution-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary);
        }
        .solution-icon {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 15px;
        }
        .solution-card h3 {
            font-size: 1.25rem;
            margin-bottom: 10px;
        }
        .solution-card p {
            font-size: 0.9rem;
            color: var(--dark-light);
        }

        /* 对比评测 */
        .rating-banner {
            display: flex;
            align-items: center;
            justify-content: space-around;
            background-color: var(--primary-light);
            border: 1px solid rgba(16, 185, 129, 0.2);
            padding: 30px;
            border-radius: 12px;
            margin-bottom: 40px;
        }
        .rating-box {
            text-align: center;
        }
        .rating-score {
            font-size: 3.5rem;
            font-weight: 800;
            color: var(--primary-hover);
            line-height: 1;
        }
        .rating-stars {
            color: #fbbf24;
            font-size: 1.5rem;
            margin: 5px 0;
        }
        .rating-label {
            font-size: 0.9rem;
            color: var(--dark-light);
        }
        .table-responsive {
            overflow-x: auto;
            background-color: var(--white);
            border-radius: 12px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }
        table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
        }
        th, td {
            padding: 15px 20px;
            border-bottom: 1px solid var(--border);
            font-size: 0.9rem;
        }
        th {
            background-color: var(--light);
            font-weight: 700;
            color: var(--dark);
        }
        tr:last-child td {
            border-bottom: none;
        }
        .highlight-col {
            background-color: rgba(16, 185, 129, 0.03);
            font-weight: 600;
        }
        .badge-yes {
            color: var(--primary-hover);
            background-color: var(--primary-light);
            padding: 3px 8px;
            border-radius: 4px;
            font-size: 0.75rem;
        }
        .badge-no {
            color: #ef4444;
            background-color: #fee2e2;
            padding: 3px 8px;
            border-radius: 4px;
            font-size: 0.75rem;
        }

        /* 案例展示区 */
        .cases-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 25px;
        }
        .case-card {
            background-color: var(--white);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }
        .case-img-wrap {
            position: relative;
            background-color: var(--light);
        }
        .case-content {
            padding: 20px;
        }
        .case-content h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }
        .case-content p {
            font-size: 0.85rem;
            color: var(--dark-light);
        }

        /* Token 比价 */
        .token-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .token-card {
            background-color: var(--white);
            border-radius: 12px;
            padding: 25px;
            border: 1px solid var(--border);
            text-align: center;
            box-shadow: var(--shadow);
        }
        .token-card.best-deal {
            border-color: var(--primary);
            position: relative;
            transform: scale(1.03);
        }
        .token-card.best-deal::top {
            content: '推荐';
        }
        .token-badge {
            position: absolute;
            top: -12px;
            right: 20px;
            background-color: var(--primary);
            color: var(--white);
            font-size: 0.75rem;
            padding: 3px 10px;
            border-radius: 10px;
        }
        .token-card h3 {
            font-size: 1.25rem;
            margin-bottom: 10px;
        }
        .token-price {
            font-size: 1.75rem;
            color: var(--primary-hover);
            font-weight: 700;
            margin: 15px 0;
        }
        .token-price span {
            font-size: 0.85rem;
            color: var(--dark-light);
            font-weight: normal;
        }

        /* 培训版块 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 15px;
        }
        .train-card {
            background-color: var(--white);
            border-radius: 8px;
            padding: 20px 15px;
            text-align: center;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .train-card:hover {
            border-color: var(--primary);
            transform: translateY(-3px);
        }
        .train-icon {
            font-size: 1.75rem;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .train-card h3 {
            font-size: 0.95rem;
            margin-bottom: 8px;
        }
        .train-card p {
            font-size: 0.75rem;
            color: var(--dark-light);
        }

        /* 表单区 */
        .form-section {
            background-color: var(--primary-light);
        }
        .form-container {
            max-width: 700px;
            margin: 0 auto;
            background-color: var(--white);
            padding: 40px;
            border-radius: 16px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border);
        }
        .form-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-bottom: 20px;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .form-group.full-width {
            grid-column: span 2;
        }
        .form-group label {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--dark);
        }
        .form-control {
            padding: 10px 14px;
            border: 1px solid var(--border);
            border-radius: 6px;
            font-size: 0.9rem;
            outline: none;
            transition: var(--transition);
        }
        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
        }
        .btn-submit {
            width: 100%;
            background-color: var(--primary);
            color: var(--white);
            border: none;
            padding: 12px;
            font-size: 1rem;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            box-shadow: 0 4px 10px rgba(16, 185, 129, 0.2);
            transition: var(--transition);
        }
        .btn-submit:hover {
            background-color: var(--primary-hover);
        }

        /* 资讯知识库 */
        .articles-list {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .article-item {
            background-color: var(--white);
            padding: 20px;
            border-radius: 8px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .article-title {
            font-size: 1rem;
            font-weight: 600;
        }
        .article-link {
            color: var(--primary);
            font-size: 0.85rem;
            font-weight: 500;
        }
        .article-link:hover {
            color: var(--primary-hover);
            text-decoration: underline;
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .faq-item {
            background-color: var(--white);
            border-radius: 8px;
            border: 1px solid var(--border);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background-color: var(--white);
            user-select: none;
        }
        .faq-question::after {
            content: '+';
            font-size: 1.25rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .faq-item.active .faq-question::after {
            content: '−';
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            padding: 0 24px;
            color: var(--dark-light);
            font-size: 0.9rem;
        }
        .faq-item.active .faq-answer {
            padding: 0 24px 20px;
            max-height: 200px; /* 大约安全值 */
        }

        /* 百科 & 排查 */
        .terms-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-top: 30px;
        }
        .term-card {
            background-color: var(--white);
            padding: 20px;
            border-radius: 8px;
            border-left: 4px solid var(--secondary);
            box-shadow: var(--shadow);
        }
        .term-card h3 {
            font-size: 1rem;
            margin-bottom: 5px;
        }
        .term-card p {
            font-size: 0.85rem;
            color: var(--dark-light);
            margin: 0;
        }

        /* 用户评论 */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .testimonial-card {
            background-color: var(--white);
            border-radius: 12px;
            padding: 25px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            position: relative;
        }
        .quote-icon {
            font-size: 2rem;
            color: var(--primary-light);
            position: absolute;
            top: 15px;
            right: 20px;
        }
        .user-comment {
            font-size: 0.9rem;
            color: var(--dark-light);
            margin-bottom: 20px;
            position: relative;
            z-index: 1;
        }
        .user-info {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .user-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
        }
        .user-details h4 {
            font-size: 0.85rem;
            font-weight: 700;
        }
        .user-details p {
            font-size: 0.75rem;
            color: var(--dark-light);
        }

        /* 联系我们 & 友情链接 */
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }
        .contact-info {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .contact-item {
            display: flex;
            align-items: flex-start;
            gap: 15px;
        }
        .contact-icon {
            color: var(--primary);
            font-size: 1.25rem;
            margin-top: 3px;
        }
        .contact-text h4 {
            font-size: 0.95rem;
            margin-bottom: 3px;
        }
        .contact-text p {
            font-size: 0.85rem;
            color: var(--dark-light);
        }
        .qr-area {
            display: flex;
            gap: 20px;
            margin-top: 20px;
            align-items: center;
        }
        .qr-card {
            background-color: var(--white);
            padding: 15px;
            border-radius: 8px;
            border: 1px solid var(--border);
            text-align: center;
            box-shadow: var(--shadow);
            width: 140px;
        }
        .qr-card img {
            width: 110px;
            height: 110px;
            margin: 0 auto 8px;
        }
        .qr-card p {
            font-size: 0.75rem;
            color: var(--dark);
            margin: 0;
            font-weight: 600;
        }

        /* 页脚 */
        footer {
            background-color: var(--dark);
            color: #d1d5db;
            padding: 50px 0 20px;
            font-size: 0.85rem;
            border-top: 4px solid var(--primary);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-col h3 {
            color: var(--white);
            font-size: 1rem;
            margin-bottom: 20px;
            border-left: 3px solid var(--primary);
            padding-left: 10px;
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a:hover {
            color: var(--primary);
        }
        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .friend-links a {
            background-color: rgba(255, 255, 255, 0.05);
            padding: 5px 10px;
            border-radius: 4px;
            color: #9ca3af;
        }
        .friend-links a:hover {
            color: var(--white);
            background-color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            color: #9ca3af;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
        }

        /* 浮动客服 */
        .floating-service {
            position: fixed;
            right: 20px;
            bottom: 80px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .float-btn {
            width: 50px;
            height: 50px;
            background-color: var(--white);
            border-radius: 50%;
            box-shadow: var(--shadow-lg);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            border: 1px solid var(--border);
            position: relative;
        }
        .float-btn:hover {
            background-color: var(--primary-light);
        }
        .float-btn svg {
            width: 24px;
            height: 24px;
            fill: var(--primary);
        }
        .float-qr {
            position: absolute;
            right: 60px;
            bottom: 0;
            background-color: var(--white);
            padding: 15px;
            border-radius: 8px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border);
            display: none;
            text-align: center;
            width: 140px;
        }
        .float-qr img {
            width: 110px;
            height: 110px;
        }
        .float-qr p {
            font-size: 0.75rem;
            color: var(--dark);
            margin-top: 5px;
        }
        .float-btn:hover .float-qr {
            display: block;
        }

        /* 移动端响应式适配 */
        @media (max-width: 1024px) {
            .solutions-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .training-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .hero h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .menu-toggle {
                display: block;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background-color: var(--white);
                border-bottom: 1px solid var(--border);
                padding: 20px;
                box-shadow: var(--shadow);
            }
            .nav-links.active {
                display: flex;
            }
            .hero {
                padding: 120px 0 60px;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero-stats {
                grid-template-columns: repeat(2, 1fr);
            }
            .about-grid, .contact-grid {
                grid-template-columns: 1fr;
            }
            .process-flow {
                grid-template-columns: 1fr;
                gap: 15px;
            }
            .process-step::after {
                content: '▼';
                right: 50%;
                bottom: -15px;
                top: auto;
                transform: translateX(50%);
            }
            .solutions-grid, .token-grid, .testimonials-grid {
                grid-template-columns: 1fr;
            }
            .token-card.best-deal {
                transform: scale(1);
            }
            .training-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cases-grid {
                grid-template-columns: 1fr;
            }
            .form-grid {
                grid-template-columns: 1fr;
            }
            .form-group.full-width {
                grid-column: span 1;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .terms-grid {
                grid-template-columns: 1fr;
            }
            .about-badge-card {
                padding: 25px;
            }
        }