:root {
            --primary: #10B981;
            --primary-hover: #059669;
            --primary-light: #ECFDF5;
            --primary-dark: #065F46;
            --dark: #0F172A;
            --text-dark: #1E293B;
            --text-muted: #64748B;
            --light: #F8FAFC;
            --white: #FFFFFF;
            --border: #E2E8F0;
            --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
            --transition: all 0.3s ease;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--text-dark);
            background-color: var(--white);
            line-height: 1.6;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }

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

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

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

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

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

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

        .nav-menu {
            display: flex;
            gap: 24px;
            list-style: none;
        }

        .nav-link {
            font-weight: 500;
            color: var(--text-dark);
        }

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

        .nav-btn {
            background-color: var(--primary);
            color: var(--white) !important;
            padding: 8px 18px;
            border-radius: 6px;
            font-weight: 600;
        }

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

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            cursor: pointer;
            color: var(--text-dark);
        }

        /* Hero 区域 (无图片) */
        .hero {
            padding: 120px 0 100px 0;
            background: linear-gradient(135deg, #F0FDF4 0%, #ECFDF5 50%, #F8FAFC 100%);
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -10%;
            left: -10%;
            width: 40%;
            height: 40%;
            background: radial-gradient(circle, rgba(16,185,129,0.1) 0%, transparent 70%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            margin: 0 auto;
        }

        .badge {
            display: inline-block;
            background-color: var(--primary-light);
            color: var(--primary-dark);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
            border: 1px solid rgba(16, 185, 129, 0.2);
        }

        h1 {
            font-size: 42px;
            line-height: 1.25;
            color: var(--dark);
            margin-bottom: 24px;
            font-weight: 800;
        }

        .hero-desc {
            font-size: 18px;
            color: var(--text-muted);
            margin-bottom: 40px;
            line-height: 1.7;
        }

        .btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-block;
            padding: 14px 32px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 16px;
            transition: var(--transition);
            cursor: pointer;
        }

        .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);
            color: var(--white);
        }

        .btn-secondary {
            background-color: var(--white);
            color: var(--text-dark);
            border: 1px solid var(--border);
        }

        .btn-secondary:hover {
            background-color: var(--light);
            transform: translateY(-2px);
        }

        /* 平台特色小指标 */
        .hero-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 60px;
            border-top: 1px solid rgba(16, 185, 129, 0.15);
            padding-top: 40px;
        }

        .stat-item {
            text-align: center;
        }

        .stat-num {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            display: block;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-muted);
        }

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

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

        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 50px auto;
        }

        .section-title {
            font-size: 32px;
            color: var(--dark);
            margin-bottom: 16px;
            font-weight: 700;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
        }

        /* 关于我们 & 软件介绍 */
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 24px;
            color: var(--dark);
            margin-bottom: 20px;
        }

        .about-text p {
            margin-bottom: 16px;
            color: var(--text-muted);
        }

        .feature-bullets {
            list-style: none;
            margin-top: 24px;
        }

        .feature-bullets li {
            position: relative;
            padding-left: 28px;
            margin-bottom: 12px;
            font-weight: 500;
        }

        .feature-bullets li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--primary);
            font-weight: bold;
        }

        /* 平台服务体系 */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 30px;
            transition: var(--transition);
        }

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

        .card-icon {
            width: 48px;
            height: 48px;
            background-color: var(--primary-light);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 20px;
            margin-bottom: 20px;
            font-weight: bold;
        }

        .card-title {
            font-size: 20px;
            color: var(--dark);
            margin-bottom: 12px;
            font-weight: 600;
        }

        .card-desc {
            font-size: 14px;
            color: var(--text-muted);
        }

        /* 制作流程 & 时间线 */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
        }

        .timeline-item {
            display: flex;
            margin-bottom: 40px;
            position: relative;
        }

        .timeline-item::after {
            content: '';
            position: absolute;
            left: 20px;
            top: 40px;
            bottom: -40px;
            width: 2px;
            background-color: var(--border);
            z-index: 1;
        }

        .timeline-item:last-child::after {
            display: none;
        }

        .timeline-badge {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: var(--primary);
            color: var(--white);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            z-index: 2;
            flex-shrink: 0;
        }

        .timeline-content {
            padding-left: 24px;
            padding-top: 6px;
        }

        .timeline-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 6px;
        }

        .timeline-desc {
            color: var(--text-muted);
            font-size: 14px;
        }

        /* 平台聚合标签云 */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-top: 20px;
        }

        .tag-item {
            background-color: var(--white);
            border: 1px solid var(--border);
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 14px;
            color: var(--text-dark);
            transition: var(--transition);
        }

        .tag-item:hover {
            background-color: var(--primary);
            color: var(--white);
            border-color: var(--primary);
        }

        /* 评测与对比表格 */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            background-color: var(--white);
            border-radius: 12px;
            border: 1px solid var(--border);
        }

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

        .comparison-table th, .comparison-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border);
            font-size: 15px;
        }

        .comparison-table th {
            background-color: var(--light);
            color: var(--dark);
            font-weight: 600;
        }

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

        .recommend-score {
            display: flex;
            align-items: center;
            justify-content: space-around;
            background-color: var(--primary-light);
            border: 1px solid rgba(16, 185, 129, 0.2);
            border-radius: 12px;
            padding: 24px;
            margin-bottom: 30px;
        }

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

        .score-num {
            font-size: 48px;
            font-weight: 800;
            color: var(--primary-dark);
        }

        .stars {
            color: #F59E0B;
            font-size: 24px;
        }

        /* 案例展示 */
        .grid-2-3 {
            display: grid;
            grid-template-columns: 1fr 1.5fr;
            gap: 40px;
        }

        .case-image-wrapper {
            background: var(--white);
            border-radius: 12px;
            padding: 12px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
        }

        .case-image-wrapper img {
            border-radius: 8px;
            width: 100%;
            display: block;
        }

        /* 价格表 */
        .price-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .price-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 30px;
            text-align: center;
            position: relative;
            overflow: hidden;
            transition: var(--transition);
        }

        .price-card.popular {
            border-color: var(--primary);
            box-shadow: 0 10px 25px -5px rgba(16, 185, 129, 0.15);
        }

        .price-badge {
            position: absolute;
            top: 15px;
            right: -30px;
            background-color: var(--primary);
            color: var(--white);
            padding: 4px 30px;
            transform: rotate(45deg);
            font-size: 12px;
            font-weight: bold;
        }

        .price-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 12px;
        }

        .price-val {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary-dark);
            margin-bottom: 20px;
        }

        .price-features {
            list-style: none;
            margin-bottom: 30px;
            text-align: left;
        }

        .price-features li {
            padding: 8px 0;
            border-bottom: 1px solid var(--light);
            font-size: 14px;
            color: var(--text-muted);
        }

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

        .comment-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 24px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .comment-text {
            font-size: 14px;
            color: var(--text-dark);
            margin-bottom: 20px;
            font-style: italic;
        }

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

        .user-info h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--dark);
        }

        .user-info span {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 帮助与百科 */
        .help-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

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

        .glossary-item {
            margin-bottom: 20px;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border);
        }

        .glossary-term {
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 6px;
        }

        .glossary-def {
            font-size: 14px;
            color: var(--text-muted);
        }

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

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

        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            color: var(--dark);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            user-select: none;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 14px;
        }

        .faq-item.active .faq-answer {
            padding-bottom: 18px;
        }

        .faq-icon::after {
            content: '+';
            font-size: 20px;
            font-weight: 400;
        }

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

        /* 资讯与知识库 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .news-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 24px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .news-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .news-date {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 智能需求匹配表单 & 联系我们 */
        .contact-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 40px;
        }

        .contact-form {
            background-color: var(--white);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 30px;
        }

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

        .form-label {
            display: block;
            font-weight: 600;
            margin-bottom: 8px;
            font-size: 14px;
        }

        .form-control {
            width: 100%;
            padding: 10px 14px;
            border: 1px solid var(--border);
            border-radius: 6px;
            font-size: 14px;
            outline: none;
            transition: var(--transition);
        }

        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
        }

        .contact-info {
            background-color: var(--primary-light);
            border-radius: 12px;
            padding: 40px;
            border: 1px solid rgba(16, 185, 129, 0.15);
        }

        .info-item {
            margin-bottom: 24px;
        }

        .info-title {
            font-weight: 700;
            font-size: 16px;
            color: var(--primary-dark);
            margin-bottom: 8px;
        }

        .info-content {
            font-size: 15px;
            color: var(--text-dark);
        }

        .qr-code {
            max-width: 150px;
            border-radius: 8px;
            margin-top: 10px;
            border: 1px solid var(--border);
        }

        /* 页脚与友情链接 */
        footer {
            background-color: var(--dark);
            color: var(--white);
            padding: 60px 0 30px 0;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
            padding-bottom: 40px;
            margin-bottom: 30px;
        }

        .footer-brand p {
            color: #94A3B8;
            margin-top: 12px;
            font-size: 13px;
        }

        .footer-col h4 {
            color: var(--white);
            margin-bottom: 20px;
            font-size: 16px;
            font-weight: 600;
        }

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

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

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

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

        .friend-links {
            margin-top: 20px;
        }

        .friend-links a {
            display: inline-block;
            margin-right: 12px;
            margin-bottom: 8px;
            color: #94A3B8;
            font-size: 13px;
        }

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

        .copyright-area {
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: #64748B;
            font-size: 12px;
            flex-wrap: wrap;
            gap: 10px;
        }

        /* 浮动客服 */
        .float-contact {
            position: fixed;
            right: 20px;
            bottom: 20px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .float-item {
            width: 50px;
            height: 50px;
            background-color: var(--primary);
            color: var(--white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 10px rgba(0,0,0,0.15);
            cursor: pointer;
            transition: var(--transition);
            font-weight: bold;
            font-size: 12px;
            text-align: center;
            line-height: 1.2;
        }

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

        /* 响应式媒体查询 */
        @media (max-width: 1024px) {
            .grid-3, .price-grid, .comments-grid, .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            h1 {
                font-size: 32px;
            }
            .grid-2, .grid-3, .grid-2-3, .price-grid, .comments-grid, .help-grid, .contact-grid, .news-grid {
                grid-template-columns: 1fr;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 72px;
                left: 0;
                width: 100%;
                background-color: var(--white);
                border-bottom: 1px solid var(--border);
                padding: 20px;
                gap: 16px;
                box-shadow: var(--shadow);
            }
            .nav-menu.active {
                display: flex;
            }
            .menu-toggle {
                display: block;
            }
            .hero-stats {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .recommend-score {
                flex-direction: column;
                gap: 20px;
            }
        }