:root {
            --primary: #10b981;
            --primary-hover: #059669;
            --primary-light: #ecfdf5;
            --text-main: #0f172a;
            --text-muted: #475569;
            --bg-main: #f8fafc;
            --bg-card: #ffffff;
            --border: #e2e8f0;
            --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.05), 0 2px 4px -2px rgb(0 0 0 / 0.05);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

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

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

        /* 顶部导航 */
        header {
            background-color: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: var(--transition);
        }

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

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

        .brand img {
            height: 40px;
            width: auto;
        }

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

        .nav-links a {
            color: var(--text-muted);
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            transition: var(--transition);
        }

        .nav-links a:hover, .nav-links a.active {
            color: var(--primary);
        }

        .nav-links .btn-nav {
            background-color: var(--primary);
            color: white;
            padding: 8px 16px;
            border-radius: 6px;
            font-weight: 600;
        }

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

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

        .menu-toggle span {
            display: block;
            width: 25px;
            height: 3px;
            background-color: var(--text-main);
            border-radius: 2px;
            transition: var(--transition);
        }

        /* 统一 Section 样式 */
        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border);
        }

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

        .section-tag {
            display: inline-block;
            background-color: var(--primary-light);
            color: var(--primary);
            padding: 4px 12px;
            border-radius: 30px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 15px;
            text-transform: uppercase;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 15px;
        }

        .section-desc {
            color: var(--text-muted);
            font-size: 15px;
        }

        /* Hero 区域 - 首屏无图限制 */
        #hero {
            background: radial-gradient(circle at 80% 20%, #e6fcf5 0%, var(--bg-main) 70%);
            padding: 120px 0 100px 0;
            text-align: center;
            position: relative;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background-color: white;
            border: 1px solid var(--primary);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 25px;
            box-shadow: var(--shadow);
        }

        .hero-title-h1 {
            font-size: 2.8rem;
            line-height: 1.25;
            font-weight: 800;
            color: var(--text-main);
            max-width: 850px;
            margin: 0 auto 20px auto;
        }

        .hero-title-h1 span {
            color: var(--primary);
            position: relative;
        }

        .hero-subtitle {
            font-size: 18px;
            color: var(--text-muted);
            max-width: 650px;
            margin: 0 auto 35px auto;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 15px;
            flex-wrap: wrap;
            margin-bottom: 40px;
        }

        .btn-primary {
            background-color: var(--primary);
            color: white;
            padding: 12px 30px;
            border-radius: 8px;
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(16, 185, 129, 0.4);
            border: 2px solid transparent;
        }

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

        .btn-secondary {
            background-color: white;
            color: var(--text-main);
            padding: 12px 30px;
            border-radius: 8px;
            font-weight: 600;
            text-decoration: none;
            border: 2px solid var(--border);
            transition: var(--transition);
        }

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

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            max-width: 1000px;
            margin: 0 auto;
        }

        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            padding: 25px 15px;
            border-radius: 12px;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

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

        .stat-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* 关于我们 */
        .about-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.8rem;
            margin-bottom: 15px;
        }

        .about-text p {
            color: var(--text-muted);
            margin-bottom: 20px;
            font-size: 15px;
        }

        .feature-bullets {
            list-style: none;
        }

        .feature-bullets li {
            position: relative;
            padding-left: 25px;
            margin-bottom: 12px;
            color: var(--text-main);
            font-weight: 500;
        }

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

        .about-image-wrapper {
            background-color: var(--primary-light);
            border-radius: 20px;
            padding: 15px;
            border: 1px solid rgba(16, 185, 129, 0.2);
        }

        .about-image-wrapper img {
            border-radius: 12px;
            width: 100%;
            display: block;
            box-shadow: var(--shadow);
        }

        /* 全平台AIGC服务 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .service-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 30px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background-color: var(--primary);
            opacity: 0;
            transition: var(--transition);
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
            border-color: rgba(16, 185, 129, 0.3);
        }

        .service-card:hover::before {
            opacity: 1;
        }

        .service-icon {
            width: 50px;
            height: 50px;
            background-color: var(--primary-light);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: var(--primary);
            font-weight: bold;
            font-size: 20px;
        }

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

        .service-desc {
            color: var(--text-muted);
            font-size: 14px;
            margin-bottom: 15px;
        }

        .model-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }

        .model-tag {
            font-size: 11px;
            background-color: #f1f5f9;
            color: var(--text-muted);
            padding: 2px 8px;
            border-radius: 4px;
        }

        /* 一站式AIGC制作与场景 */
        .scene-container {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .scene-box {
            background-color: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 30px;
            display: flex;
            gap: 20px;
            align-items: flex-start;
        }

        .scene-content h4 {
            font-size: 1.2rem;
            margin-bottom: 8px;
            color: var(--text-main);
        }

        .scene-content p {
            font-size: 14px;
            color: var(--text-muted);
        }

        /* 标准化流程与网络 */
        .process-flow {
            display: flex;
            justify-content: space-between;
            position: relative;
            margin-bottom: 60px;
            flex-wrap: wrap;
            gap: 20px;
        }

        .process-step {
            flex: 1;
            min-width: 200px;
            background-color: var(--bg-card);
            border: 1px solid var(--border);
            padding: 25px;
            border-radius: 12px;
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .step-num {
            width: 40px;
            height: 40px;
            background-color: var(--primary);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            margin: 0 auto 15px auto;
        }

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

        .step-desc {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* 案例中心 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .case-card {
            background: var(--bg-card);
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--border);
            transition: var(--transition);
        }

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

        .case-img-container {
            width: 100%;
            height: 200px;
            overflow: hidden;
            background-color: #e2e8f0;
        }

        .case-img-container img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

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

        .case-info {
            padding: 20px;
        }

        .case-badge {
            display: inline-block;
            background-color: var(--primary-light);
            color: var(--primary);
            font-size: 11px;
            padding: 2px 8px;
            border-radius: 4px;
            margin-bottom: 10px;
            font-weight: 600;
        }

        .case-title {
            font-weight: 700;
            font-size: 16px;
            margin-bottom: 8px;
        }

        .case-desc {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* 对比评测 */
        .evaluation-section {
            background: linear-gradient(180deg, var(--bg-main) 0%, #ecfdf5 100%);
        }

        .eval-grid {
            display: grid;
            grid-template-columns: 1fr 2fr;
            gap: 40px;
            align-items: center;
        }

        .score-box {
            background: var(--bg-card);
            border: 2px solid var(--primary);
            border-radius: 20px;
            padding: 40px 30px;
            text-align: center;
            box-shadow: var(--shadow);
        }

        .rating-stars {
            color: #fbbf24;
            font-size: 24px;
            margin-bottom: 10px;
        }

        .rating-num {
            font-size: 4rem;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1;
        }

        .rating-max {
            color: var(--text-muted);
            font-size: 18px;
        }

        .rating-label {
            margin-top: 15px;
            font-size: 16px;
            font-weight: 700;
            color: var(--primary);
        }

        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border-radius: 12px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            background: var(--bg-card);
        }

        .eval-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 600px;
        }

        .eval-table th, .eval-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border);
            font-size: 14px;
        }

        .eval-table th {
            background-color: #f1f5f9;
            font-weight: 700;
        }

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

        .tag-highlight {
            color: var(--primary);
            font-weight: 700;
        }

        /* Token 比价 */
        .token-price-box {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 30px;
            box-shadow: var(--shadow);
        }

        /* 职业与人工智能培训 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .course-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 25px;
            transition: var(--transition);
        }

        .course-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow);
        }

        .course-auth {
            font-size: 11px;
            color: #d97706;
            background-color: #fef3c7;
            padding: 2px 8px;
            border-radius: 4px;
            display: inline-block;
            margin-bottom: 10px;
            font-weight: 600;
        }

        .course-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .course-desc {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 15px;
        }

        /* 用户评论 */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .comment-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 25px;
            position: relative;
        }

        .comment-quote {
            color: var(--primary);
            font-size: 32px;
            position: absolute;
            top: 10px;
            left: 20px;
            line-height: 1;
            font-family: serif;
            opacity: 0.2;
        }

        .comment-text {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
            position: relative;
            z-index: 2;
        }

        .commenter-info {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .commenter-avatar {
            width: 40px;
            height: 40px;
            background-color: var(--primary-light);
            color: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 14px;
        }

        .commenter-name {
            font-weight: 700;
            font-size: 14px;
        }

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

        /* 帮助中心与 FAQ */
        .help-layout {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 40px;
        }

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

        .faq-header {
            padding: 18px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            user-select: none;
            font-weight: 600;
            transition: var(--transition);
        }

        .faq-header:hover {
            background-color: #f8fafc;
        }

        .faq-icon {
            font-size: 18px;
            transition: var(--transition);
            color: var(--primary);
        }

        .faq-content {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            color: var(--text-muted);
            font-size: 14px;
        }

        .faq-item.active .faq-content {
            padding: 0 20px 18px 20px;
            max-height: 200px;
        }

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

        .troubleshoot-box {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 25px;
        }

        .troubleshoot-box h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 15px;
            border-bottom: 2px solid var(--primary-light);
            padding-bottom: 8px;
        }

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

        .ts-list li {
            position: relative;
            padding-left: 20px;
            margin-bottom: 10px;
            font-size: 13px;
        }

        .ts-list li::before {
            content: "•";
            color: var(--primary);
            position: absolute;
            left: 0;
            font-weight: bold;
        }

        /* 行业资讯 & 最新文章 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .news-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 25px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .news-title {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 15px;
            color: var(--text-main);
        }

        .news-link {
            font-size: 13px;
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .news-link:hover {
            text-decoration: underline;
        }

        /* 联系我们与表单 */
        .contact-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
        }

        .contact-info-panel {
            background: var(--bg-card);
            border: 1px solid var(--border);
            padding: 40px;
            border-radius: 16px;
        }

        .contact-methods {
            margin-top: 30px;
        }

        .contact-item {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 20px;
        }

        .contact-icon {
            width: 40px;
            height: 40px;
            background-color: var(--primary-light);
            color: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
        }

        .contact-detail h5 {
            font-size: 13px;
            color: var(--text-muted);
        }

        .contact-detail p {
            font-weight: 700;
            font-size: 15px;
        }

        .qr-codes {
            display: flex;
            gap: 20px;
            margin-top: 30px;
            flex-wrap: wrap;
        }

        .qr-box {
            text-align: center;
            font-size: 12px;
            color: var(--text-muted);
        }

        .qr-box img {
            width: 100px;
            height: 100px;
            border: 1px solid var(--border);
            border-radius: 8px;
            margin-bottom: 8px;
            display: block;
        }

        /* 需求表单 */
        .form-panel {
            background: var(--bg-card);
            border: 1px solid var(--border);
            padding: 40px;
            border-radius: 16px;
            box-shadow: var(--shadow);
        }

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

        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-muted);
        }

        .form-control {
            width: 100%;
            padding: 12px;
            border: 1px solid var(--border);
            border-radius: 6px;
            font-family: inherit;
            font-size: 14px;
            color: var(--text-main);
            background-color: var(--bg-main);
            transition: var(--transition);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            background-color: white;
            box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
        }

        textarea.form-control {
            resize: vertical;
            min-height: 100px;
        }

        .btn-submit {
            width: 100%;
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 14px;
            border-radius: 6px;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
        }

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

        /* 页脚 */
        footer {
            background-color: #0f172a;
            color: #94a3b8;
            padding: 60px 0 30px 0;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-col h4 {
            color: white;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
        }

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

        .footer-col ul li {
            margin-bottom: 12px;
        }

        .footer-col ul li a {
            color: #94a3b8;
            text-decoration: none;
            transition: var(--transition);
        }

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

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .friend-links a {
            color: #94a3b8;
            text-decoration: none;
            font-size: 12px;
            background-color: #1e293b;
            padding: 4px 10px;
            border-radius: 4px;
            transition: var(--transition);
        }

        .friend-links a:hover {
            color: var(--primary);
            background-color: #334155;
        }

        .footer-bottom {
            border-top: 1px solid #1e293b;
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
        }

        .footer-bottom p {
            font-size: 12px;
        }

        /* 浮动客服 */
        .float-kefu {
            position: fixed;
            right: 20px;
            bottom: 40px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .kefu-trigger {
            width: 50px;
            height: 50px;
            background-color: var(--primary);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 10px rgba(0,0,0,0.2);
            cursor: pointer;
            transition: var(--transition);
            font-size: 12px;
            font-weight: bold;
            text-align: center;
            line-height: 1.2;
        }

        .kefu-trigger:hover {
            background-color: var(--primary-hover);
            transform: scale(1.05);
        }

        .kefu-popover {
            position: absolute;
            bottom: 60px;
            right: 0;
            background: white;
            border: 1px solid var(--border);
            padding: 15px;
            border-radius: 12px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            width: 200px;
            text-align: center;
            display: none;
            transition: var(--transition);
        }

        .kefu-popover.active {
            display: block;
        }

        .kefu-popover img {
            width: 120px;
            height: 120px;
            margin: 0 auto 10px auto;
            display: block;
        }

        .kefu-popover p {
            font-size: 12px;
            color: var(--text-main);
            font-weight: 600;
        }

        /* 响应式调整 */
        @media (max-width: 992px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .services-grid, .case-grid, .training-grid, .comments-grid, .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .about-content, .contact-layout, .eval-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .menu-toggle {
                display: flex;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: white;
                border-bottom: 1px solid var(--border);
                padding: 20px;
                gap: 15px;
                box-shadow: var(--shadow);
            }
            .nav-links.active {
                display: flex;
            }
            .hero-title-h1 {
                font-size: 2rem;
            }
            .stats-grid, .services-grid, .case-grid, .training-grid, .comments-grid, .news-grid, .scene-container {
                grid-template-columns: 1fr;
            }
            .help-layout {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }