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

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 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: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 10px auto;
    padding: 5px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo h2 {
    color: #4a90e2;
    font-weight: 700;
    font-size: 1.8rem;
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-size: 21px;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: #4a90e2;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background: #4a90e2;
}

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

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

/* 主页横幅 */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 100px 0 10px;
    display: flex;
    align-items: center;
    min-height: 80vh;
}

/* 左边DIV设置 */
.left {
  width: 1200px;
  overflow: hidden; /* 确保图片超出部分被隐藏 */
}

.left img {
  width: 100%;
  height: 100%;
  object-fit: cover; /* 保证图片全部填充左边DIV */
}

/* 右边DIV设置 */
.right {
  flex-grow: 1; /* 占据剩余所有空间 */
  padding: 10px; /* 根据需要调整内边距 */
  font-size: 1.5rem;
  margin-bottom: 2rem;
  opacity: 0.9;
  line-height: 2.0;
}

/* 手机端样式 */
@media (max-width: 768px) { /* 假设768px及以下为手机端 */
  .hero {
    flex-direction: column; /* 改变布局方向为垂直 */
  }
  
  .left {
    display: none; /* 隐藏左边DIV */
  }
  
  .right {
    height: auto; /* 自动高度 */
  }
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
	
	font-size: 1.2rem;
	margin-bottom: 2rem;
	opacity: 0.9;
	line-height: 2.0;
}


.btn {
    padding: 12px 30px;
    border: none;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
    display: inline-block;
}

.btn-primary {
    background: #fff;
    color: #4a90e2;
}

.btn-primary:hover {
    background: #f0f8ff;
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

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

.btn-secondary:hover {
    background: #fff;
    color: #4a90e2;
    transform: translateY(-2px);
}

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

/*.hero-placeholder {*/
/*    background: rgba(255, 255, 255, 0.1);*/
/*    border-radius: 20px;*/
/*    padding: 2rem;*/
/*    backdrop-filter: blur(10px);*/
/*}*/
.hero-image img {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 页面标题 */
.page-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 120px 0 60px;
    text-align: center;
}

.page-header h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

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

/* 特色功能 */
.features {
    padding: 80px 0;
    background: #f8f9fa;
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #333;
}

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

.feature-card {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #333;
}

.feature-card p {
    color: #666;
    line-height: 1.8;
}

/* 应用领域 */
.applications {
    padding: 80px 0;
}

.applications h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #333;
}

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

.app-item {
    background: linear-gradient(135deg, #4a90e2, #357abd);
    color: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    transition: transform 0.3s ease;
}

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

.app-item h4 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

/* 产品展示 */
.products-section {
    padding: 80px 0;
}

.products-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #333;
}

.hardware-section {
    background: #f8f9fa;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.product-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.product-image {
    height: 200px;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-info {
    padding: 2rem;
}

.product-info h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #333;
}

.product-info p {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.product-info ul {
    list-style: none;
}

.product-info li {
    color: #4a90e2;
    margin-bottom: 0.5rem;
    position: relative;
    padding-left: 1.5rem;
}

.product-info li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #52c41a;
    font-weight: bold;
}

/* 解决方案 */
.solutions-section {
    padding: 80px 0;
    background: #f8f9fa;
}

.solutions-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #333;
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.solution-card {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

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

.solution-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #333;
}

.solution-card p {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

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

.feature-tag {
    background: #e8f4fd;
    color: #4a90e2;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

/* 关于我们页面样式 */
.company-intro {
    padding: 80px 0;
}

.intro-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: center;
}

.intro-text h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: #333;
}

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

.company-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

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

.stat-item h3 {
    font-size: 2.5rem;
    color: #4a90e2;
    margin-bottom: 0.5rem;
}

.stat-item p {
    color: #666;
    font-weight: 500;
}

.company-placeholder {
    background: #f8f9fa;
    border-radius: 15px;
    padding: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 企业文化 */
.company-culture {
    padding: 80px 0;
    background: #f8f9fa;
}

.company-culture h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #333;
}

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

.culture-item {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.culture-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.culture-item h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #333;
}

.culture-item p {
    color: #666;
    line-height: 1.8;
}

/* 核心优势 */
.advantages {
    padding: 80px 0;
}

.advantages h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #333;
}

.advantages-list {
    display: grid;
    gap: 2rem;
}

.advantage-item {
    display: flex;
    align-items: flex-start;
    gap: 2rem;
    padding: 2rem;
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.advantage-number {
    background: linear-gradient(135deg, #4a90e2, #357abd);
    color: white;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    flex-shrink: 0;
}

.advantage-content h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #333;
}

.advantage-content p {
    color: #666;
    line-height: 1.8;
}

/* 发展历程 */
.timeline {
    padding: 80px 0;
    background: #f8f9fa;
}

.timeline h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #333;
}

.timeline-container {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline-container::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #4a90e2;
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    align-items: center;
    margin-bottom: 3rem;
    position: relative;
}

.timeline-item:nth-child(odd) {
    flex-direction: row;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-year {
    background: #4a90e2;
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 50px;
    font-weight: bold;
    font-size: 1.2rem;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.timeline-content {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    width: 45%;
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-right: auto;
    margin-left: 0;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-left: auto;
    margin-right: 0;
}

.timeline-content h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: #333;
}

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

/* 联系我们 */
.contact {
    padding: 80px 0;
}

.contact h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #333;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-item {
    margin-bottom: 2rem;
}

.contact-item h4 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: #333;
}

.contact-item p {
    color: #666;
    font-size: 1.1rem;
}

.contact-form {
    background: #f8f9fa;
    padding: 2.5rem;
    border-radius: 15px;
}

.contact-form h4 {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: #333;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #4a90e2;
}

/* 页脚 */
.footer {
    background: #333;
    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,
.footer-section h4 {
    margin-bottom: 1rem;
    color: #4a90e2;
}

.footer-section p {
    color: #ccc;
    line-height: 1.8;
}

.footer-bottom {
    border-top: 1px solid #555;
    padding-top: 2rem;
    text-align: center;
    color: #999;
}

.footer-bottom a{
    color: #999;
    text-decoration: none;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: left;
        gap: 2rem;
        font-size: 24px;
        text-indent: 2em;
    }

    /*.hero-content h1 {*/
    /*    font-size: 2.5rem;*/
    /*}*/

    /*.hero-buttons {*/
    /*    justify-content: center;*/
    /*    flex-wrap: wrap;*/
    /*}*/

    .page-header h1 {
        font-size: 2rem;
    }

    .features h2,
    .applications h2,
    .products-section h2,
    .solutions-section h2 {
        font-size: 2rem;
    }

    .intro-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .company-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .timeline-container::before {
        left: 20px;
    }

    .timeline-item {
        flex-direction: row !important;
        padding-left: 60px;
    }

    .timeline-year {
        left: 20px;
        transform: translateX(-50%);
    }

    .timeline-content {
        width: 100%;
        margin: 0 !important;
    }

    .advantage-item {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero {
        padding: 100px 0 60px;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-content p {
        font-size: 1rem;
    }

    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

    .feature-card,
    .product-card,
    .solution-card {
        padding: 1.5rem;
    }

    .company-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .stat-item h3 {
        font-size: 2rem;
    }
}