/* 基础样式 */
:root {
    --primary-green: #08543e;
    --secondary-gold: #c3a368;
    --light-bg: #f8f5ee;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
    color: #333;
    scroll-behavior: smooth;
}

/* 页眉样式 */
header {
    background-color: var(--primary-green);
    color: white;
    padding: 20px;
    text-align: center;
    position: relative;
}

.logo-container {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 15px;
}

.logo-link {
    display: inline-block;
    margin-right: 15px;
    transition: transform 0.3s;
    border-radius: 4px;
    overflow: hidden;
}

.logo {
    height: 80px;
    display: block;
}

/* 导航菜单 */
nav {
    background-color: var(--primary-green);
    padding: 12px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

nav ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}

nav ul li {
    margin: 0 20px;
}

nav ul li a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    padding: 5px 10px;
    border-radius: 4px;
    transition: all 0.3s;
}

nav ul li a:hover {
    background-color: var(--secondary-gold);
    color: var(--primary-green);
}

nav ul li a.active {
    background-color: var(--secondary-gold);
    color: var(--primary-green);
    font-weight: bold;
}

/* 内容区域 */
main {
    padding: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

/* 页脚 */
footer {
    background-color: var(--primary-green);
    color: white;
    text-align: center;
    padding: 25px;
    margin-top: 30px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    nav ul li {
        margin: 5px 10px;
    }
    
    .logo-container {
        flex-direction: column;
    }
    
    .logo-link {
        margin-right: 0;
        margin-bottom: 10px;
    }
}