/* 中华三槐堂网站统一样式文件 */
/* 响应式设计，适配多终端多浏览器 */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

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

/* 头部导航 */
header {
    background: linear-gradient(135deg, #1a5f3f 0%, #2d8659 100%);
    color: #fff;
    padding: 15px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    text-decoration: none;
    color: #fff;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 25px;
    flex-wrap: wrap;
}

.nav-links a {
    color: #fff;
    text-decoration: none;
    font-size: 16px;
    transition: opacity 0.3s;
    padding: 8px 12px;
    border-radius: 4px;
}

.nav-links a:hover {
    background-color: rgba(255,255,255,0.1);
    opacity: 0.9;
}

/* 主要内容区 */
main {
    min-height: calc(100vh - 200px);
    padding: 30px 0;
    background-color: #fff;
}

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

/* 标题样式 */
h1 {
    font-size: 32px;
    color: #1a5f3f;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 3px solid #2d8659;
}

h2 {
    font-size: 26px;
    color: #2d8659;
    margin: 25px 0 15px 0;
}

h3 {
    font-size: 20px;
    color: #1a5f3f;
    margin: 20px 0 10px 0;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    background-color: #2d8659;
    color: #fff;
    text-decoration: none;
    border-radius: 5px;
    font-size: 16px;
    transition: background-color 0.3s;
    border: none;
    cursor: pointer;
    min-height: 44px;
    min-width: 44px;
    text-align: center;
    line-height: 20px;
}

.btn:hover {
    background-color: #1a5f3f;
}

.btn-large {
    padding: 18px 40px;
    font-size: 18px;
    font-weight: bold;
}

.btn-secondary {
    background-color: #6c757d;
}

.btn-secondary:hover {
    background-color: #5a6268;
}

/* 卡片样式 */
.card {
    background: #fff;
    border-radius: 8px;
    padding: 25px;
    margin-bottom: 20px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.card-title {
    font-size: 22px;
    color: #1a5f3f;
    margin-bottom: 15px;
}

/* 导航卡片网格 */
.nav-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin: 30px 0;
}

.nav-card {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    text-decoration: none;
    color: #333;
    transition: all 0.3s;
    border: 2px solid transparent;
}

.nav-card:hover {
    border-color: #2d8659;
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}

.nav-card h3 {
    color: #1a5f3f;
    margin-bottom: 10px;
    font-size: 22px;
}

.nav-card p {
    color: #666;
    font-size: 14px;
}

/* 列表样式 */
ul, ol {
    margin-left: 25px;
    margin-bottom: 15px;
}

li {
    margin-bottom: 8px;
    line-height: 1.8;
}

/* 链接样式 */
a {
    color: #2d8659;
    text-decoration: none;
    transition: color 0.3s;
}

a:hover {
    color: #1a5f3f;
    text-decoration: underline;
}

/* 表格样式 */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

th, td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

th {
    background-color: #2d8659;
    color: #fff;
    font-weight: bold;
}

tr:hover {
    background-color: #f5f5f5;
}

/* 面包屑导航 */
.breadcrumb {
    padding: 10px 0;
    font-size: 14px;
    color: #666;
}

.breadcrumb a {
    color: #2d8659;
}

.breadcrumb span {
    margin: 0 8px;
    color: #999;
}

/* 页脚版权 */
footer {
    background-color: #1a5f3f;
    color: #fff;
    text-align: center;
    padding: 25px 0;
    margin-top: 50px;
}

footer .copyright-line1 {
    font-size: 16px;
    font-weight: bold;
    margin-bottom: 8px;
}

footer .copyright-line2 {
    font-size: 14px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-links {
        flex-direction: column;
        gap: 10px;
        width: 100%;
        margin-top: 15px;
    }
    
    .nav-links a {
        display: block;
        padding: 12px;
        background-color: rgba(255,255,255,0.1);
        border-radius: 5px;
    }
    
    h1 {
        font-size: 24px;
    }
    
    h2 {
        font-size: 20px;
    }
    
    h3 {
        font-size: 18px;
    }
    
    .nav-grid {
        grid-template-columns: 1fr;
    }
    
    .container {
        padding: 0 15px;
    }
    
    main {
        padding: 20px 0;
    }
    
    .btn {
        width: 100%;
        margin-bottom: 10px;
    }
}

@media (max-width: 480px) {
    body {
        font-size: 14px;
    }
    
    .logo {
        font-size: 20px;
    }
    
    h1 {
        font-size: 22px;
    }
    
    .card {
        padding: 15px;
    }
}

/* 打印样式 */
@media print {
    header, footer, nav {
        display: none;
    }
    
    main {
        padding: 0;
    }
}