/* ===== 全局样式 ===== */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Arial', 'Microsoft YaHei', sans-serif;
        }
        
        :root {
            --primary-color: #1a73e8;
            --secondary-color: #0d47a1;
            --accent-color: #34a853;
            --light-color: #f8f9fa;
            --dark-color: #202124;
            --gray-color: #5f6368;
        }
        
        body {
            color: var(--dark-color);
            line-height: 1.6;
            background-color: #f5f7fa;
        }
        
        .container {
            width: 90%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }
        
        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.3s ease;
        }
        
        ul {
            list-style: none;
        }
        
        .btn {
            display: inline-block;
            padding: 12px 24px;
            background-color: var(--primary-color);
            color: white;
            border-radius: 4px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.3s ease;
            border: none;
        }
        
        .btn:hover {
            background-color: var(--secondary-color);
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        }
        
        .btn-secondary {
            background-color: transparent;
            border: 1px solid var(--primary-color);
            color: var(--primary-color);
        }
        
        .btn-secondary:hover {
            background-color: rgba(26, 115, 232, 0.1);
        }
        
        section {
            padding: 80px 0;
        }
        
        .section-title {
            text-align: center;
            margin-bottom: 50px;
        }
        
        .section-title h2 {
            font-size: 2.5rem;
            color: var(--dark-color);
            margin-bottom: 15px;
        }
        
        .section-title p {
            font-size: 1.1rem;
            color: var(--gray-color);
            max-width: 700px;
            margin: 0 auto;
        }
        
        /* ===== 头部样式 ===== */
        header {
            background-color: white;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        
        .logo {
            display: flex;
            align-items: center;
        }
        
        .logo img {
            height: 40px;
            margin-right: 10px;
        }
        
        .logo h1 {
            font-size: 1.5rem;
            color: var(--primary-color);
        }
        
        .nav-menu {
            display: flex;
        }
        
        .nav-menu li {
            margin-left: 30px;
        }
        
        .nav-menu a {
            font-weight: 500;
            color: var(--dark-color);
            position: relative;
        }
        
        .nav-menu a:hover {
            color: var(--primary-color);
        }
        
        .nav-menu a.active {
            color: var(--primary-color);
        }
        
        .nav-menu a.active::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: var(--primary-color);
        }
        
        .mobile-menu-btn {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
        }
        
        /* ===== 页面标题区域 ===== */
        .page-header {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
            padding: 60px 0;
            text-align: center;
        }
        
        .page-header h1 {
            font-size: 2.5rem;
            margin-bottom: 15px;
        }
        
        .page-header p {
            font-size: 1.2rem;
            opacity: 0.9;
            max-width: 800px;
            margin: 0 auto;
        }
        
        /* ===== 英雄区域样式 ===== */
        .hero {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
            padding: 100px 0;
            text-align: center;
        }
        
        .hero-content {
            max-width: 800px;
            margin: 0 auto;
        }
        
        .hero h2 {
            font-size: 3rem;
            margin-bottom: 20px;
            line-height: 1.2;
        }
        
        .hero p {
            font-size: 1.2rem;
            margin-bottom: 30px;
            opacity: 0.9;
        }
        
        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-top: 30px;
        }
        
        .hero-btns .btn {
            background-color: white;
            color: var(--primary-color);
        }
        
        .hero-btns .btn:hover {
            background-color: rgba(255,255,255,0.9);
        }
        
        .hero-btns .btn-secondary {
            background-color: transparent;
            color: white;
            border-color: white;
        }
        
        .hero-btns .btn-secondary:hover {
            background-color: rgba(255,255,255,0.1);
        }
        
        /* ===== 服务场景样式 ===== */
        .scenarios {
            background-color: white;
        }
        
        .scenario-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .scenario-card {
            background-color: var(--light-color);
            border-radius: 8px;
            padding: 30px;
            text-align: center;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        
        .scenario-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }
        
        .scenario-icon {
            width: 70px;
            height: 70px;
            background-color: rgba(26, 115, 232, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
        }
        
        .scenario-icon i {
            font-size: 2rem;
            color: var(--primary-color);
        }
        
        .scenario-card h3 {
            font-size: 1.5rem;
            margin-bottom: 15px;
        }
        
        /* ===== 功能特性样式 ===== */
        .features {
            background-color: #f5f7fa;
        }
        
        .feature-tabs {
            display: flex;
            justify-content: center;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }
        
        .feature-tab {
            padding: 12px 24px;
            background-color: white;
            border: 1px solid #e0e0e0;
            cursor: pointer;
            margin: 0 5px 10px;
            border-radius: 4px;
            transition: all 0.3s ease;
        }
        
        .feature-tab.active {
            background-color: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
        }
        
        .feature-content {
            display: none;
        }
        
        .feature-content.active {
            display: block;
        }
        
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
        }
        
        .feature-item {
            background-color: white;
            border-radius: 8px;
            padding: 25px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        
        .feature-item h4 {
            font-size: 1.2rem;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
        }
        
        .feature-item h4 i {
            color: var(--accent-color);
            margin-right: 10px;
        }
        
        /* ===== 合规声明样式 ===== */
        .compliance {
            background-color: white;
            text-align: center;
        }
        
        .compliance-content {
            max-width: 900px;
            margin: 0 auto;
            background-color: var(--light-color);
            padding: 40px;
            border-radius: 8px;
            border-left: 4px solid var(--accent-color);
        }
        
        .compliance-content h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
            color: var(--dark-color);
        }
        
        .compliance-content p {
            margin-bottom: 20px;
            color: var(--gray-color);
        }
        
        /* ===== 下载区域样式 ===== */
        .download {
            background: linear-gradient(135deg, #1a73e8, #0d47a1);
            color: white;
            text-align: center;
        }
        
        .download-content {
            max-width: 800px;
            margin: 0 auto;
        }
        
        .download-content h2 {
            font-size: 2.5rem;
            margin-bottom: 20px;
        }
        
        .download-content p {
            font-size: 1.1rem;
            margin-bottom: 40px;
            opacity: 0.9;
        }
        
        .platform-btns {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 15px;
            margin-bottom: 40px;
        }
        
        .platform-btn {
            display: flex;
            align-items: center;
            background-color: rgba(255,255,255,0.1);
            padding: 15px 25px;
            border-radius: 8px;
            transition: all 0.3s ease;
        }
        
        .platform-btn:hover {
            background-color: rgba(255,255,255,0.2);
            transform: translateY(-5px);
        }
        
        .platform-btn i {
            font-size: 2rem;
            margin-right: 15px;
        }
        
        .platform-info h4 {
            font-size: 1.2rem;
            margin-bottom: 5px;
        }
        
        /* ===== 新闻资讯样式 ===== */
        .news {
            background-color: white;
        }
        
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .news-card {
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            transition: transform 0.3s ease;
        }
        
        .news-card:hover {
            transform: translateY(-5px);
        }
        
        .news-img {
            height: 200px;
            background-color: #e0e0e0;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--gray-color);
        }
        
        .news-content {
            padding: 20px;
        }
        
        .news-date {
            color: var(--gray-color);
            font-size: 0.9rem;
            margin-bottom: 10px;
        }
        
        .news-content h3 {
            font-size: 1.3rem;
            margin-bottom: 10px;
        }
        
        .news-content p {
            color: var(--gray-color);
            margin-bottom: 15px;
        }
        
        .news-link {
            color: var(--primary-color);
            font-weight: 500;
            display: flex;
            align-items: center;
        }
        
        .news-link i {
            margin-left: 5px;
            transition: transform 0.3s ease;
        }
        
        .news-link:hover i {
            transform: translateX(5px);
        }
        
        /* ===== 产品版本样式 ===== */
        .plans {
            background-color: white;
        }
        
        .plan-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .plan-card {
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            transition: transform 0.3s ease;
            background-color: white;
        }
        
        .plan-card.featured {
            transform: scale(1.05);
            border: 2px solid var(--primary-color);
            position: relative;
        }
        
        .plan-card.featured::before {
            content: '推荐';
            position: absolute;
            top: 15px;
            right: -30px;
            background-color: var(--primary-color);
            color: white;
            padding: 5px 30px;
            transform: rotate(45deg);
            font-size: 0.8rem;
            font-weight: 500;
        }
        
        .plan-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
        }
        
        .plan-card.featured:hover {
            transform: scale(1.05) translateY(-10px);
        }
        
        .plan-header {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
            padding: 30px;
            text-align: center;
        }
        
        .plan-header h3 {
            font-size: 1.5rem;
            margin-bottom: 10px;
        }
        
        .plan-price {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 5px;
        }
        
        .plan-period {
            opacity: 0.8;
        }
        
        .plan-features {
            padding: 30px;
        }
        
        .plan-features ul li {
            padding: 10px 0;
            border-bottom: 1px solid #eee;
            display: flex;
            align-items: center;
        }
        
        .plan-features ul li:last-child {
            border-bottom: none;
        }
        
        .plan-features ul li i {
            color: var(--accent-color);
            margin-right: 10px;
        }
        
        .plan-action {
            padding: 0 30px 30px;
            text-align: center;
        }
        
        /* ===== 技术优势样式 ===== */
        .tech-advantages {
            background-color: #f5f7fa;
        }
        
        .tech-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .tech-item {
            background-color: white;
            border-radius: 8px;
            padding: 30px;
            text-align: center;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        
        .tech-icon {
            width: 80px;
            height: 80px;
            background-color: rgba(26, 115, 232, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
        }
        
        .tech-icon i {
            font-size: 2.5rem;
            color: var(--primary-color);
        }
        
        .tech-item h3 {
            font-size: 1.5rem;
            margin-bottom: 15px;
        }
        
        /* ===== 教程导航样式 ===== */
        .tutorial-nav {
            background-color: white;
            padding: 20px 0;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            position: sticky;
            top: 70px;
            z-index: 999;
        }
        
        .tutorial-nav-container {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 10px;
        }
        
        .tutorial-nav-item {
            padding: 10px 20px;
            background-color: var(--light-color);
            border-radius: 30px;
            cursor: pointer;
            transition: all 0.3s ease;
            font-weight: 500;
        }
        
        .tutorial-nav-item.active {
            background-color: var(--primary-color);
            color: white;
        }
        
        .tutorial-nav-item:hover:not(.active) {
            background-color: rgba(26, 115, 232, 0.1);
        }
        
        /* ===== 教程步骤样式 ===== */
        .tutorial-steps {
            max-width: 900px;
            margin: 0 auto;
        }
        
        .tutorial-step {
            display: flex;
            margin-bottom: 50px;
            align-items: flex-start;
        }
        
        .tutorial-step:last-child {
            margin-bottom: 0;
        }
        
        .step-number {
            width: 50px;
            height: 50px;
            background-color: var(--primary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 1.2rem;
            margin-right: 30px;
            flex-shrink: 0;
        }
        
        .step-content {
            flex: 1;
        }
        
        .step-content h3 {
            font-size: 1.5rem;
            margin-bottom: 15px;
            color: var(--dark-color);
        }
        
        .step-content p {
            color: var(--gray-color);
            margin-bottom: 20px;
        }
        
        .step-image {
            margin: 20px 0;
            text-align: center;
            background-color: #f8f9fa;
            padding: 30px;
            border-radius: 8px;
            border: 1px solid #e9ecef;
        }
        
        .step-image img {
            max-width: 100%;
            border-radius: 4px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        
        .step-image-caption {
            margin-top: 10px;
            color: var(--gray-color);
            font-size: 0.9rem;
        }
        
        .step-tip {
            background-color: rgba(52, 168, 83, 0.1);
            border-left: 4px solid var(--accent-color);
            padding: 15px 20px;
            margin: 20px 0;
            border-radius: 0 4px 4px 0;
        }
        
        .step-tip h4 {
            display: flex;
            align-items: center;
            margin-bottom: 5px;
            color: var(--dark-color);
        }
        
        .step-tip h4 i {
            color: var(--accent-color);
            margin-right: 10px;
        }
        
        /* ===== 常见问题样式 ===== */
        .faq {
            background-color: white;
        }
        
        .faq-item {
            margin-bottom: 20px;
            border: 1px solid #e0e0e0;
            border-radius: 8px;
            overflow: hidden;
            max-width: 900px;
            margin-left: auto;
            margin-right: auto;
        }
        
        .faq-question {
            padding: 20px;
            background-color: var(--light-color);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 500;
        }
        
        .faq-question i {
            transition: transform 0.3s ease;
        }
        
        .faq-question.active i {
            transform: rotate(180deg);
        }
        
        .faq-answer {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
        }
        
        .faq-answer.active {
            padding: 20px;
            max-height: 500px;
        }
        
        .faq-answer p {
            color: var(--gray-color);
            margin-bottom: 15px;
        }
        
        .faq-answer p:last-child {
            margin-bottom: 0;
        }
        
        /* ===== 公司简介样式 ===== */
        .company-intro {
            background-color: white;
        }
        
        .intro-content {
            display: flex;
            align-items: center;
            gap: 50px;
        }
        
        .intro-text {
            flex: 1;
        }
        
        .intro-text h2 {
            font-size: 2rem;
            margin-bottom: 20px;
            color: var(--dark-color);
        }
        
        .intro-text p {
            color: var(--gray-color);
            margin-bottom: 20px;
        }
        
        .intro-stats {
            display: flex;
            justify-content: space-between;
            margin-top: 40px;
        }
        
        .stat-item {
            text-align: center;
        }
        
        .stat-number {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 5px;
        }
        
        .stat-label {
            color: var(--gray-color);
            font-size: 0.9rem;
        }
        
        .intro-image {
            flex: 1;
            text-align: center;
        }
        
        .intro-image-placeholder {
            width: 100%;
            height: 300px;
            background-color: #e9ecef;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--gray-color);
        }
        
        /* ===== 使命愿景样式 ===== */
        .mission-vision {
            background-color: #f5f7fa;
        }
        
        .mission-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .mission-card {
            background-color: white;
            border-radius: 8px;
            padding: 40px 30px;
            text-align: center;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            transition: transform 0.3s ease;
        }
        
        .mission-card:hover {
            transform: translateY(-10px);
        }
        
        .mission-icon {
            width: 80px;
            height: 80px;
            background-color: rgba(26, 115, 232, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
        }
        
        .mission-icon i {
            font-size: 2.5rem;
            color: var(--primary-color);
        }
        
        .mission-card h3 {
            font-size: 1.5rem;
            margin-bottom: 15px;
        }
        
        .mission-card p {
            color: var(--gray-color);
        }
        
        /* ===== 团队文化样式 ===== */
        .team-culture {
            background-color: white;
        }
        
        .culture-content {
            display: flex;
            align-items: center;
            gap: 50px;
        }
        
        .culture-image {
            flex: 1;
            text-align: center;
        }
        
        .culture-image-placeholder {
            width: 100%;
            height: 300px;
            background-color: #e9ecef;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--gray-color);
        }
        
        .culture-text {
            flex: 1;
        }
        
        .culture-text h2 {
            font-size: 2rem;
            margin-bottom: 20px;
            color: var(--dark-color);
        }
        
        .culture-text p {
            color: var(--gray-color);
            margin-bottom: 20px;
        }
        
        .culture-values {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-top: 30px;
        }
        
        .value-item {
            display: flex;
            align-items: flex-start;
        }
        
        .value-icon {
            width: 40px;
            height: 40px;
            background-color: rgba(52, 168, 83, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 15px;
            flex-shrink: 0;
        }
        
        .value-icon i {
            color: var(--accent-color);
        }
        
        .value-text h4 {
            margin-bottom: 5px;
        }
        
        .value-text p {
            color: var(--gray-color);
            font-size: 0.9rem;
            margin-bottom: 0;
        }
        
        /* ===== 团队成员样式 ===== */
        .team-members {
            background-color: #f5f7fa;
        }
        
        .members-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
        }
        
        .member-card {
            background-color: white;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            transition: transform 0.3s ease;
            text-align: center;
        }
        
        .member-card:hover {
            transform: translateY(-10px);
        }
        
        .member-image {
            height: 200px;
            background-color: #e9ecef;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--gray-color);
        }
        
        .member-info {
            padding: 20px;
        }
        
        .member-info h3 {
            font-size: 1.3rem;
            margin-bottom: 5px;
        }
        
        .member-role {
            color: var(--primary-color);
            font-weight: 500;
            margin-bottom: 10px;
        }
        
        .member-desc {
            color: var(--gray-color);
            font-size: 0.9rem;
        }
        
        /* ===== 招贤纳士样式 ===== */
        .careers {
            background-color: white;
        }
        
        .careers-intro {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 50px;
        }
        
        .careers-intro h2 {
            font-size: 2rem;
            margin-bottom: 20px;
            color: var(--dark-color);
        }
        
        .careers-intro p {
            color: var(--gray-color);
            margin-bottom: 30px;
        }
        
        .job-positions {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .job-card {
            background-color: var(--light-color);
            border-radius: 8px;
            padding: 30px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        
        .job-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }
        
        .job-card h3 {
            font-size: 1.3rem;
            margin-bottom: 10px;
        }
        
        .job-meta {
            display: flex;
            margin-bottom: 15px;
            color: var(--gray-color);
            font-size: 0.9rem;
        }
        
        .job-location, .job-type {
            margin-right: 20px;
            display: flex;
            align-items: center;
        }
        
        .job-location i, .job-type i {
            margin-right: 5px;
        }
        
        .job-desc {
            color: var(--gray-color);
            margin-bottom: 20px;
            font-size: 0.95rem;
        }
        
        /* ===== 联系我们样式 ===== */
        .contact {
            background-color: #f5f7fa;
        }
        
        .contact-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 50px;
        }
        
        .contact-info {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        
        .contact-item {
            display: flex;
            align-items: flex-start;
        }
        
        .contact-icon {
            width: 50px;
            height: 50px;
            background-color: rgba(26, 115, 232, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 20px;
            flex-shrink: 0;
        }
        
        .contact-icon i {
            font-size: 1.5rem;
            color: var(--primary-color);
        }
        
        .contact-text h3 {
            margin-bottom: 5px;
            font-size: 1.2rem;
        }
        
        .contact-text p {
            color: var(--gray-color);
        }
        
        .contact-form {
            background-color: white;
            border-radius: 8px;
            padding: 30px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        
        .form-group {
            margin-bottom: 20px;
        }
        
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
        }
        
        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #e0e0e0;
            border-radius: 4px;
            font-size: 1rem;
            transition: border-color 0.3s ease;
        }
        
        .form-control:focus {
            border-color: var(--primary-color);
            outline: none;
        }
        
        textarea.form-control {
            min-height: 120px;
            resize: vertical;
        }
        
        /* ===== 新闻分类导航 ===== */
        .news-categories {
            background-color: white;
            padding: 20px 0;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            position: sticky;
            top: 70px;
            z-index: 999;
        }
        
        .categories-container {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 10px;
        }
        
        .category-item {
            padding: 10px 20px;
            background-color: var(--light-color);
            border-radius: 30px;
            cursor: pointer;
            transition: all 0.3s ease;
            font-weight: 500;
        }
        
        .category-item.active {
            background-color: var(--primary-color);
            color: white;
        }
        
        .category-item:hover:not(.active) {
            background-color: rgba(26, 115, 232, 0.1);
        }
        
        /* ===== 新闻列表样式 ===== */
        .news-list {
            background-color: white;
        }
        
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 30px;
            margin-bottom: 50px;
        }
        
        .news-card {
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            transition: transform 0.3s ease;
            background-color: white;
        }
        
        .news-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
        }
        
        .news-card.featured {
            grid-column: 1 / -1;
            display: flex;
            flex-direction: row;
        }
        
        .news-card.featured .news-image {
            flex: 1;
            height: 300px;
        }
        
        .news-card.featured .news-content {
            flex: 1;
            padding: 30px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        
        .news-image {
            height: 200px;
            background-color: #e9ecef;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--gray-color);
            position: relative;
        }
        
        .news-category-tag {
            position: absolute;
            top: 15px;
            left: 15px;
            background-color: var(--primary-color);
            color: white;
            padding: 5px 10px;
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: 500;
        }
        
        .news-content {
            padding: 20px;
        }
        
        .news-date {
            color: var(--gray-color);
            font-size: 0.9rem;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
        }
        
        .news-date i {
            margin-right: 5px;
        }
        
        .news-content h3 {
            font-size: 1.3rem;
            margin-bottom: 10px;
            line-height: 1.4;
        }
        
        .news-content p {
            color: var(--gray-color);
            margin-bottom: 15px;
        }
        
        .news-link {
            color: var(--primary-color);
            font-weight: 500;
            display: flex;
            align-items: center;
        }
        
        .news-link i {
            margin-left: 5px;
            transition: transform 0.3s ease;
        }
        
        .news-link:hover i {
            transform: translateX(5px);
        }
        
        /* ===== 分页样式 ===== */
        .pagination {
            display: flex;
            justify-content: center;
            align-items: center;
            margin-top: 50px;
        }
        
        .pagination-item {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 5px;
            border-radius: 4px;
            background-color: var(--light-color);
            cursor: pointer;
            transition: all 0.3s ease;
        }
        
        .pagination-item.active {
            background-color: var(--primary-color);
            color: white;
        }
        
        .pagination-item:hover:not(.active) {
            background-color: rgba(26, 115, 232, 0.1);
        }
        
        .pagination-prev, .pagination-next {
            display: flex;
            align-items: center;
            padding: 0 15px;
        }
        
        .pagination-prev i {
            margin-right: 5px;
        }
        
        .pagination-next i {
            margin-left: 5px;
        }
        
        /* ===== 新闻订阅样式 ===== */
        .news-subscription {
            background-color: #f5f7fa;
            text-align: center;
        }
        
        .subscription-content {
            max-width: 600px;
            margin: 0 auto;
            background-color: white;
            padding: 40px;
            border-radius: 8px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        
        .subscription-content h3 {
            font-size: 1.8rem;
            margin-bottom: 15px;
            color: var(--dark-color);
        }
        
        .subscription-content p {
            color: var(--gray-color);
            margin-bottom: 30px;
        }
        
        .subscription-form {
            display: flex;
            gap: 10px;
        }
        
        .subscription-input {
            flex: 1;
            padding: 12px 15px;
            border: 1px solid #e0e0e0;
            border-radius: 4px;
            font-size: 1rem;
        }
        
        .subscription-input:focus {
            border-color: var(--primary-color);
            outline: none;
        }
        
        /* ===== 热门标签样式 ===== */
        .popular-tags {
            background-color: white;
        }
        
        .tags-container {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }
        
        .tag {
            padding: 8px 15px;
            background-color: var(--light-color);
            border-radius: 30px;
            font-size: 0.9rem;
            transition: all 0.3s ease;
        }
        
        .tag:hover {
            background-color: rgba(26, 115, 232, 0.1);
            color: var(--primary-color);
        }
        
        /* ===== 文章详情页样式 ===== */
        .article-header {
            background-color: white;
            padding: 60px 0 40px;
        }
        
        .article-meta {
            display: flex;
            align-items: center;
            margin-bottom: 20px;
            color: var(--gray-color);
            font-size: 0.9rem;
        }
        
        .article-category {
            background-color: var(--primary-color);
            color: white;
            padding: 5px 10px;
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: 500;
            margin-right: 15px;
        }
        
        .article-date {
            display: flex;
            align-items: center;
            margin-right: 20px;
        }
        
        .article-date i {
            margin-right: 5px;
        }
        
        .article-author {
            display: flex;
            align-items: center;
        }
        
        .article-author i {
            margin-right: 5px;
        }
        
        .article-title {
            font-size: 2.5rem;
            line-height: 1.3;
            margin-bottom: 30px;
        }
        
        .article-featured-image {
            width: 100%;
            height: 400px;
            background-color: #e9ecef;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--gray-color);
            margin-bottom: 40px;
        }
        
        .article-content {
            background-color: white;
            padding: 60px 0;
        }
        
        .article-body {
            max-width: 800px;
            margin: 0 auto;
        }
        
        .article-body h2 {
            font-size: 1.8rem;
            margin: 40px 0 20px;
            color: var(--dark-color);
        }
        
        .article-body h3 {
            font-size: 1.4rem;
            margin: 30px 0 15px;
            color: var(--dark-color);
        }
        
        .article-body p {
            margin-bottom: 20px;
            color: var(--dark-color);
            line-height: 1.8;
        }
        
        .article-body ul, .article-body ol {
            margin-bottom: 20px;
            padding-left: 30px;
        }
        
        .article-body li {
            margin-bottom: 10px;
            color: var(--dark-color);
            line-height: 1.6;
        }
        
        .article-body blockquote {
            border-left: 4px solid var(--primary-color);
            padding: 20px 30px;
            margin: 30px 0;
            background-color: var(--light-color);
            font-style: italic;
        }
        
        .article-body .image-caption {
            text-align: center;
            color: var(--gray-color);
            font-size: 0.9rem;
            margin-top: 10px;
        }
        
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin: 40px 0;
        }
        
        .article-tag {
            padding: 5px 10px;
            background-color: var(--light-color);
            border-radius: 4px;
            font-size: 0.8rem;
        }
        
        .article-actions {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 30px 0;
            border-top: 1px solid #e0e0e0;
            border-bottom: 1px solid #e0e0e0;
            margin: 40px 0;
        }
        
        .social-share {
            display: flex;
            align-items: center;
            gap: 15px;
        }
        
        .share-text {
            font-weight: 500;
        }
        
        .share-buttons {
            display: flex;
            gap: 10px;
        }
        
        .share-button {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background-color: var(--light-color);
            transition: all 0.3s ease;
        }
        
        .share-button:hover {
            background-color: var(--primary-color);
            color: white;
        }
        
        .article-navigation {
            display: flex;
            justify-content: space-between;
            margin: 40px 0;
        }
        
        .nav-prev, .nav-next {
            display: flex;
            align-items: center;
            max-width: 45%;
        }
        
        .nav-prev {
            text-align: left;
        }
        
        .nav-next {
            text-align: right;
            margin-left: auto;
        }
        
        .nav-arrow {
            font-size: 1.2rem;
            margin: 0 10px;
        }
        
        .nav-text {
            font-size: 0.9rem;
            color: var(--gray-color);
        }
        
        .nav-title {
            font-weight: 500;
            margin-top: 5px;
        }
        
        /* ===== 相关文章 ===== */
        .related-articles {
            background-color: #f5f7fa;
        }
        
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .related-card {
            background-color: white;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            transition: transform 0.3s ease;
        }
        
        .related-card:hover {
            transform: translateY(-5px);
        }
        
        .related-image {
            height: 160px;
            background-color: #e9ecef;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--gray-color);
        }
        
        .related-content {
            padding: 20px;
        }
        
        .related-date {
            color: var(--gray-color);
            font-size: 0.8rem;
            margin-bottom: 10px;
        }
        
        .related-content h3 {
            font-size: 1.1rem;
            margin-bottom: 10px;
            line-height: 1.4;
        }
        
        /* ===== 评论区域 ===== */
        .comments {
            background-color: white;
        }
        
        .comments-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 30px;
        }
        
        .comments-count {
            font-size: 1.2rem;
            font-weight: 500;
        }
        
        .comment-form {
            background-color: var(--light-color);
            padding: 30px;
            border-radius: 8px;
            margin-bottom: 40px;
        }
        
        .form-group {
            margin-bottom: 20px;
        }
        
        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
        }
        
        .comment-list {
            margin-top: 40px;
        }
        
        .comment-item {
            padding: 25px 0;
            border-bottom: 1px solid #e0e0e0;
        }
        
        .comment-item:last-child {
            border-bottom: none;
        }
        
        .comment-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 15px;
        }
        
        .comment-author {
            font-weight: 500;
        }
        
        .comment-date {
            color: var(--gray-color);
            font-size: 0.9rem;
        }
        
        .comment-content {
            color: var(--dark-color);
            line-height: 1.6;
        }
        
        .comment-reply {
            margin-top: 15px;
            color: var(--primary-color);
            font-size: 0.9rem;
            cursor: pointer;
        }
        
        /* ===== 页脚样式 ===== */
        footer {
            background-color: var(--dark-color);
            color: white;
            padding: 60px 0 20px;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        
        .footer-column h3 {
            font-size: 1.2rem;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }
        
        .footer-column h3::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 2px;
            background-color: var(--primary-color);
        }
        
        .footer-links li {
            margin-bottom: 10px;
        }
        
        .footer-links a {
            color: #b0b0b0;
        }
        
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        
        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: #b0b0b0;
            font-size: 0.9rem;
        }
        
        /* ===== 响应式设计 ===== */
        @media (max-width: 992px) {
            .section-title h2 {
                font-size: 2rem;
            }
            
            .page-header h1 {
                font-size: 2rem;
            }
            
            .hero h2 {
                font-size: 2.5rem;
            }
            
            .plan-cards {
                grid-template-columns: 1fr;
                max-width: 500px;
                margin: 0 auto;
            }
            
            .plan-card.featured {
                transform: scale(1);
            }
            
            .plan-card.featured:hover {
                transform: translateY(-10px);
            }
            
            .intro-content,
            .culture-content {
                flex-direction: column;
            }
            
            .intro-image,
            .culture-image {
                order: -1;
            }
            
            .culture-values {
                grid-template-columns: 1fr;
            }
            
            .news-card.featured {
                flex-direction: column;
            }
            
            .news-card.featured .news-image {
                height: 200px;
            }
            
            .article-title {
                font-size: 2rem;
            }
        }
        
        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: white;
                flex-direction: column;
                padding: 20px;
                box-shadow: 0 5px 10px rgba(0,0,0,0.1);
            }
            
            .nav-menu.active {
                display: flex;
            }
            
            .nav-menu li {
                margin: 10px 0;
            }
            
            .mobile-menu-btn {
                display: block;
            }
            
            .hero h2 {
                font-size: 2rem;
            }
            
            .hero-btns {
                flex-direction: column;
                align-items: center;
            }
            
            .hero-btns .btn {
                width: 100%;
                max-width: 300px;
                margin-bottom: 10px;
            }
            
            .platform-btns {
                flex-direction: column;
                align-items: center;
            }
            
            .platform-btn {
                width: 100%;
                max-width: 300px;
            }
            
            .feature-tabs {
                flex-direction: column;
                align-items: center;
            }
            
            .feature-tab {
                width: 100%;
                max-width: 300px;
                margin-bottom: 10px;
                text-align: center;
            }
            
            .tutorial-nav-container {
                flex-direction: column;
                align-items: center;
            }
            
            .tutorial-nav-item {
                width: 100%;
                max-width: 300px;
                text-align: center;
            }
            
            .tutorial-step {
                flex-direction: column;
            }
            
            .step-number {
                margin-right: 0;
                margin-bottom: 20px;
            }
            
            .intro-stats {
                flex-wrap: wrap;
                justify-content: center;
                gap: 20px;
            }
            
            .stat-item {
                flex: 0 0 calc(50% - 20px);
            }
            
            .contact-content {
                grid-template-columns: 1fr;
            }
            
            .categories-container {
                flex-direction: column;
                align-items: center;
            }
            
            .category-item {
                width: 100%;
                max-width: 300px;
                text-align: center;
            }
            
            .news-grid {
                grid-template-columns: 1fr;
            }
            
            .subscription-form {
                flex-direction: column;
            }
            
            .article-featured-image {
                height: 250px;
            }
            
            .form-row {
                grid-template-columns: 1fr;
            }
            
            .article-navigation {
                flex-direction: column;
                gap: 20px;
            }
            
            .nav-prev, .nav-next {
                max-width: 100%;
            }
            
            .article-actions {
                flex-direction: column;
                gap: 20px;
                align-items: flex-start;
            }
        }
        
        @media (max-width: 576px) {
            section {
                padding: 60px 0;
            }
            
            .section-title h2 {
                font-size: 1.8rem;
            }
            
            .hero {
                padding: 80px 0;
            }
            
            .hero h2 {
                font-size: 1.8rem;
            }
            
            .page-header {
                padding: 40px 0;
            }
            
            .page-header h1 {
                font-size: 1.8rem;
            }
            
            .scenario-cards,
            .feature-grid,
            .tech-grid,
            .members-grid,
            .job-positions {
                grid-template-columns: 1fr;
            }
            
            .stat-item {
                flex: 0 0 100%;
            }
            
            .related-grid {
                grid-template-columns: 1fr;
            }
        }