/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Microsoft YaHei', '微软雅黑', Arial, sans-serif;
}

body {
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

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

/* 导航栏样式 */
.navbar {
    height: 50px;
    background-color: #4CAF50;
    color: white;
    position: relative;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    z-index: 100;
}

.navbar-container {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 50px;
    position: relative;
    padding: 0 20px;
}

.navbar-logo, .navbar-menu, .navbar-item, .navbar-link {
    height: 100%;
    display: flex;
    align-items: center;
}

.navbar-logo {
    font-size: 1.5rem;
    font-weight: bold;
    text-decoration: none;
    color: white;
    display: flex;
    align-items: center;
    height: 100%;
    line-height: 1;
}

.navbar-menu {
    margin-left: auto;
    display: flex;
    align-items: center;
    height: 100%;
}

.navbar-item {
    display: flex;
    align-items: center;
}

.navbar-link {
    display: flex;
    align-items: center;
    padding: 0 12px;
    font-size: 1rem;
    text-decoration: none;
    color: #fff;
    background: none;
    border: none;
    box-sizing: border-box;
}

.navbar-link:hover {
    color: #8BC34A;
}

/* 移动端导航栏优化 */
@media (max-width: 768px) {
    .navbar-container {
        height: 50px;
        padding: 0 10px;
    }
    .navbar-logo {
        font-size: 1.2rem;
    }
    .navbar-menu, .navbar-item, .navbar-link {
        height: 50px;
        align-items: center;
        display: flex;
    }
}

/* 页面头部样式 */
.page-header {
    background-color: #f8f8f8;
    padding: 5px 0;
    text-align: center;
    border-bottom: 1px solid #eaeaea;
}

.page-title {
    font-size: 2.5rem;
    color: #4CAF50;
    margin-bottom: 0px;
    font-weight: bold;
}

.page-subtitle {
    font-size: 1.0rem;
    color: #666;
}

/* 主体内容样式 */
.main-content {
    padding: 0px 0;
}

.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 10px;
}

.grid-item {
    background-color: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.grid-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.15);
}

.grid-item-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.grid-item-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.grid-item-content {
    padding: 10px;
}

.grid-item-title {
    font-size: 1.3rem;
    margin-bottom: 5px;
    color: #4CAF50;
}

.grid-item-description {
    color: #666;
    font-size: 0.9rem;
}

/* 页脚样式 */
.footer {
    background-color: #333;
    color: white;
    padding: 20px 0;
    margin-top: 20px;
}

.footer-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}

.footer-section {
    flex: 1;
    min-width: 200px;
    margin-bottom: 10px;
}

.footer-title {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: #8BC34A;
}

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

.footer-link {
    margin-bottom: 8px;
}

.footer-link a {
    color: #ddd;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-link a:hover {
    color: #8BC34A;
}

/* 知识链接样式，横向紧凑型 */
.knowledge-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 20px;
}

.knowledge-link {
    color: #ddd;
    text-decoration: none;
    padding: 8px 15px;
    border-radius: 5px;
    background-color: rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.knowledge-link:hover {
    background-color: #8BC34A;
    color: #333;
}

.footer-bottom {
    margin-top: 5px;
    text-align: center;
    padding-top: 0;
    border-top: none;
    font-size: 0.8rem;
}

/* 访问计数器样式 */
.visitor-counter {
    text-align: center;
    margin-bottom: 5px;
    font-size: 0.8rem;
}

.visitor-counter p {
    background-color: rgba(255, 255, 255, 0.1);
    display: inline-block;
    padding: 8px 5px;
    border-radius: 5px;
}

.visitor-counter span {
    color: #4CAF50;
    font-weight: bold;
    margin: 0 5px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .navbar-container {
        flex-direction: row !important;
    }
    .navbar-menu {
        margin-top: 0;
    }
    .grid-container {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    }
    
    .page-title {
        font-size: 2rem;
    }
    
    .knowledge-links {
        flex-wrap: wrap;
    }
}