/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

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

/* 导航栏样式 */
.navbar {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo h2 {
    color: #2c5aa0;
    font-size: 1.8rem;
    font-weight: bold;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: #2c5aa0;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background: #2c5aa0;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 25px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, #2c5aa0, #1e3d72);
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #1e3d72, #2c5aa0);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(44, 90, 160, 0.3);
}

.btn-secondary {
    background: transparent;
    color: #2c5aa0;
    border: 2px solid #2c5aa0;
}

.btn-secondary:hover {
    background: #2c5aa0;
    color: white;
}

/* 主页横幅 */
.hero {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    padding: 120px 0 80px;
    display: flex;
    align-items: center;
    min-height: 80vh;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content h1 {
    font-size: 3.5rem;
    color: #2c5aa0;
    margin-bottom: 1rem;
    font-weight: bold;
}

.hero-content h2 {
    font-size: 1.8rem;
    color: #555;
    margin-bottom: 1.5rem;
}

.hero-content p {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-placeholder {
    background: rgba(255, 255, 255, 0.9);
    border-radius: 20px;
    padding: 3rem;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.hero-placeholder i {
    color: #2c5aa0;
    margin-bottom: 1rem;
}

.hero-placeholder p {
    color: #666;
    font-size: 1.1rem;
    margin: 0;
}

/* 项目亮点 */
.highlights {
    padding: 80px 0;
    background: #fff;
}

.highlights h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #2c5aa0;
    margin-bottom: 3rem;
}

.highlights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.highlight-card {
    background: #fff;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

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

.highlight-icon {
    background: linear-gradient(135deg, #2c5aa0, #1e3d72);
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.highlight-icon i {
    color: white;
    font-size: 2rem;
}

.highlight-card h3 {
    color: #2c5aa0;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.highlight-card p {
    color: #666;
    line-height: 1.6;
}

/* 产品预览 */
.products-preview {
    padding: 80px 0;
    background: #f8f9fa;
}

.products-preview h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #2c5aa0;
    margin-bottom: 3rem;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.product-card {
    background: #fff;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

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

.product-image {
    margin-bottom: 1.5rem;
}

.product-image i {
    color: #2c5aa0;
}

.product-card h3 {
    color: #2c5aa0;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.product-card p {
    color: #666;
    line-height: 1.6;
}

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

/* 统计数据 */
.stats {
    padding: 80px 0;
    background: linear-gradient(135deg, #2c5aa0, #1e3d72);
    color: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

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

.stat-item h3 {
    font-size: 3rem;
    margin-bottom: 0.5rem;
    font-weight: bold;
}

.stat-item p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* 页面标题 */
.page-header {
    background: linear-gradient(135deg, #2c5aa0, #1e3d72);
    color: white;
    padding: 120px 0 80px;
    text-align: center;
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* 项目概述 */
.project-overview {
    padding: 80px 0;
    background: #fff;
}

.overview-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.overview-text h2 {
    color: #2c5aa0;
    font-size: 2.5rem;
    margin-bottom: 2rem;
}

.overview-text p {
    color: #666;
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.overview-image {
    display: flex;
    justify-content: center;
}

.image-placeholder {
    background: #f8f9fa;
    border-radius: 15px;
    padding: 3rem;
    text-align: center;
    border: 2px dashed #ddd;
}

.image-placeholder i {
    color: #2c5aa0;
    margin-bottom: 1rem;
}

.image-placeholder p {
    color: #666;
    margin: 0;
}

/* 项目目标 */
.project-goals {
    padding: 80px 0;
    background: #f8f9fa;
}

.project-goals h2 {
    text-align: center;
    color: #2c5aa0;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.goals-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.goal-card {
    background: #fff;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.goal-icon {
    background: linear-gradient(135deg, #2c5aa0, #1e3d72);
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.goal-icon i {
    color: white;
    font-size: 2rem;
}

.goal-card h3 {
    color: #2c5aa0;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.goal-card p {
    color: #666;
    line-height: 1.6;
}

/* 项目特色 */
.project-features {
    padding: 80px 0;
    background: #fff;
}

.project-features h2 {
    text-align: center;
    color: #2c5aa0;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.features-list {
    max-width: 800px;
    margin: 0 auto;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 2rem;
    margin-bottom: 3rem;
    padding: 2rem;
    background: #f8f9fa;
    border-radius: 15px;
}

.feature-icon {
    background: linear-gradient(135deg, #2c5aa0, #1e3d72);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.feature-icon i {
    color: white;
    font-size: 1.5rem;
}

.feature-content h3 {
    color: #2c5aa0;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.feature-content p {
    color: #666;
    line-height: 1.6;
}

/* 团队介绍 */
.team-intro {
    padding: 80px 0;
    background: #f8f9fa;
}

.team-intro h2 {
    text-align: center;
    color: #2c5aa0;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.team-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.team-info h3 {
    color: #2c5aa0;
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.team-info h4 {
    color: #2c5aa0;
    font-size: 1.3rem;
    margin: 2rem 0 1rem;
}

.team-info p {
    color: #666;
    line-height: 1.6;
    margin-bottom: 1rem;
}

/* 产品详情 */
.product-detail {
    padding: 80px 0;
}

.product-detail.alt-bg {
    background: #f8f9fa;
}

.product-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.product-content.reverse {
    direction: rtl;
}

.product-content.reverse > * {
    direction: ltr;
}

.product-info h2 {
    color: #2c5aa0;
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.product-subtitle {
    color: #666;
    font-size: 1.2rem;
    margin-bottom: 2rem;
    font-style: italic;
}

.product-features {
    margin: 2rem 0;
}

.feature {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 10px;
}

.feature i {
    color: #2c5aa0;
    font-size: 1.2rem;
}

.product-description {
    color: #666;
    line-height: 1.6;
    font-size: 1.1rem;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.product-item {
    text-align: center;
    padding: 1.5rem;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

.product-item i {
    color: #2c5aa0;
    font-size: 2rem;
    margin-bottom: 1rem;
}

.product-item h4 {
    color: #2c5aa0;
    margin-bottom: 0.5rem;
}

.product-item p {
    color: #666;
    font-size: 0.9rem;
}

/* 功能标签 */
.feature-tabs {
    margin: 2rem 0;
}

.tab-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.tab-item {
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 10px;
    border-left: 4px solid #2c5aa0;
}

.tab-item h4 {
    color: #2c5aa0;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tab-item p {
    color: #666;
    line-height: 1.6;
}

/* 资源库 */
.resource-library {
    padding: 80px 0;
    background: #f8f9fa;
}

.resource-library h2 {
    text-align: center;
    color: #2c5aa0;
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-subtitle {
    text-align: center;
    color: #666;
    font-size: 1.2rem;
    margin-bottom: 3rem;
}

.resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.resource-card {
    background: #fff;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

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

.resource-icon {
    background: linear-gradient(135deg, #2c5aa0, #1e3d72);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.resource-icon i {
    color: white;
    font-size: 1.5rem;
}

.resource-card h3 {
    color: #2c5aa0;
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.resource-card p {
    color: #666;
    line-height: 1.6;
}

/* 成果页面样式 */
.main-achievements {
    padding: 80px 0;
    background: #fff;
}

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.achievement-card {
    background: #fff;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    border-left: 5px solid #2c5aa0;
}

.achievement-card.featured {
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
}

.achievement-icon {
    background: linear-gradient(135deg, #2c5aa0, #1e3d72);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.achievement-icon i {
    color: white;
    font-size: 1.5rem;
}

.achievement-card h3 {
    color: #2c5aa0;
    margin-bottom: 1rem;
    font-size: 1.4rem;
}

.achievement-card p {
    color: #666;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.achievement-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.feature-tag {
    background: #2c5aa0;
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
}

/* 产品开发 */
.product-development {
    padding: 80px 0;
    background: #f8f9fa;
}

.product-development h2 {
    text-align: center;
    color: #2c5aa0;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.development-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.development-card {
    background: #fff;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.card-header {
    background: linear-gradient(135deg, #2c5aa0, #1e3d72);
    color: white;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.card-header i {
    font-size: 1.5rem;
}

.card-header h3 {
    font-size: 1.3rem;
}

.card-content {
    padding: 1.5rem;
}

.card-content p {
    color: #666;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.card-content ul {
    list-style: none;
    padding: 0;
}

.card-content li {
    color: #666;
    padding: 0.3rem 0;
    position: relative;
    padding-left: 1.5rem;
}

.card-content li::before {
    content: '✓';
    color: #2c5aa0;
    font-weight: bold;
    position: absolute;
    left: 0;
}

/* 线下活动 */
.offline-activities {
    padding: 80px 0;
    background: #fff;
}

.offline-activities h2 {
    text-align: center;
    color: #2c5aa0;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.activities-timeline {
    max-width: 800px;
    margin: 0 auto;
}

.activity-item {
    display: flex;
    gap: 2rem;
    margin-bottom: 3rem;
    padding: 2rem;
    background: #f8f9fa;
    border-radius: 15px;
    position: relative;
}

.activity-icon {
    background: linear-gradient(135deg, #2c5aa0, #1e3d72);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.activity-icon i {
    color: white;
    font-size: 1.5rem;
}

.activity-content h3 {
    color: #2c5aa0;
    margin-bottom: 1rem;
    font-size: 1.4rem;
}

.activity-content p {
    color: #666;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.activity-stats {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.activity-stats span {
    background: #2c5aa0;
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.9rem;
}

/* 数据结果 */
.data-results {
    padding: 80px 0;
    background: linear-gradient(135deg, #2c5aa0, #1e3d72);
    color: white;
}

.data-results h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.data-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.data-card {
    text-align: center;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    backdrop-filter: blur(10px);
}

.data-number {
    font-size: 3rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.data-label {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    opacity: 0.9;
}

.data-card p {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* 未来规划 */
.future-plans {
    padding: 80px 0;
    background: #f8f9fa;
}

.future-plans h2 {
    text-align: center;
    color: #2c5aa0;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.plans-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.plan-item {
    background: #fff;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.plan-icon {
    background: linear-gradient(135deg, #2c5aa0, #1e3d72);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.plan-icon i {
    color: white;
    font-size: 1.5rem;
}

.plan-item h3 {
    color: #2c5aa0;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.plan-item p {
    color: #666;
    line-height: 1.6;
}

/* 联系页面样式 */
.contact-info {
    padding: 80px 0;
    background: #fff;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.contact-card {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.contact-icon {
    background: linear-gradient(135deg, #2c5aa0, #1e3d72);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.contact-icon i {
    color: white;
    font-size: 1.5rem;
}

.contact-card h3 {
    color: #2c5aa0;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.contact-details p {
    color: #666;
    line-height: 1.6;
    margin-bottom: 0.5rem;
}

/* 合作方式 */
.cooperation {
    padding: 80px 0;
    background: #f8f9fa;
}

.cooperation h2 {
    text-align: center;
    color: #2c5aa0;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.cooperation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.cooperation-item {
    background: #fff;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.cooperation-item:hover {
    transform: translateY(-5px);
}

.cooperation-icon {
    background: linear-gradient(135deg, #2c5aa0, #1e3d72);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.cooperation-icon i {
    color: white;
    font-size: 1.5rem;
}

.cooperation-item h3 {
    color: #2c5aa0;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.cooperation-item p {
    color: #666;
    line-height: 1.6;
}

/* 联系表单 */
.contact-form-section {
    padding: 80px 0;
    background: #fff;
}

.form-container {
    max-width: 800px;
    margin: 0 auto;
}

.form-header {
    text-align: center;
    margin-bottom: 3rem;
}

.form-header h2 {
    color: #2c5aa0;
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

/* 页脚 */
.footer {
    background: #2c5aa0;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.footer-section h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.footer-section p {
    opacity: 0.9;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.footer-section ul {
    list-style: none;
    padding: 0;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: white;
    text-decoration: none;
    opacity: 0.9;
    transition: opacity 0.3s ease;
}

.footer-section ul li a:hover {
    opacity: 1;
    text-decoration: underline;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-bottom p {
    opacity: 0.7;
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero-content,
    .overview-content,
    .team-content,
    .product-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .product-content.reverse {
        direction: ltr;
    }
    
    .hero-content h1 {
        font-size: 2.8rem;
    }
    
    .hero-content h2 {
        font-size: 1.5rem;
    }
    
    .hero-content p {
        font-size: 1.1rem;
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .page-header {
        padding: 100px 0 60px;
    }
    
    .page-header h1 {
        font-size: 2.5rem;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background: #fff;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 10px rgba(0,0,0,0.1);
        padding: 2rem 0;
        gap: 1.5rem;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 1rem;
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
    
    .highlights h2,
    .products-preview h2,
    .project-goals h2,
    .project-features h2,
    .team-intro h2,
    .product-development h2,
    .offline-activities h2,
    .data-results h2,
    .future-plans h2 {
        font-size: 2rem;
    }
    
    .product-info h2 {
        font-size: 2rem;
    }
    
    .overview-text h2 {
        font-size: 2rem;
    }
    
    .feature-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .feature-icon {
        margin-bottom: 1rem;
    }
    
    .achievements-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .hero-content h2 {
        font-size: 1.3rem;
    }
    
    .hero-content p {
        font-size: 1rem;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    .page-header p {
        font-size: 1rem;
    }
    
    .highlights h2,
    .products-preview h2,
    .project-goals h2,
    .project-features h2,
    .team-intro h2,
    .product-development h2,
    .offline-activities h2,
    .data-results h2,
    .future-plans h2 {
        font-size: 1.8rem;
    }
    
    .product-info h2 {
        font-size: 1.8rem;
    }
    
    .overview-text h2 {
        font-size: 1.8rem;
    }
    
    .stat-item h3 {
        font-size: 2.5rem;
    }
    
    .stat-item p {
        font-size: 1rem;
    }
    
    .data-number {
        font-size: 2.5rem;
    }
    
    .data-label {
        font-size: 1.1rem;
    }
}