/* {模板路径}/static/css/style.css */
/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f9f9f9;
}

a {
    text-decoration: none;
    color: #2c7dfa;
    transition: all 0.3s ease;
}

a:hover {
    color: #1a5dc8;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

.btn {
    display: inline-block;
    padding: 8px 20px;
    background-color: #2c7dfa;
    color: #fff;
    border-radius: 4px;
    font-weight: bold;
    text-align: center;
    transition: all 0.3s ease;
}

.btn:hover {
    background-color: #1a5dc8;
    color: #fff;
}

.section {
    padding: 60px 0;
}

.bg-light {
    background-color: #f0f5ff;
}

/* 头部样式 */
#header {
    background-color: #2c7dfa;
    color: #fff;
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.logo h1 {
    font-size: 24px;
    margin: 0;
    padding: 0;
    color: #fff;
}

#main-nav {
    margin-top: 15px;
}

#main-nav ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}

#main-nav li {
    margin: 0 15px;
}

#main-nav a {
    color: #fff;
    font-weight: bold;
    font-size: 16px;
    padding: 5px 0;
    position: relative;
}

#main-nav a:hover {
    color: #e0e0ff;
}

#main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: #fff;
    transition: width 0.3s ease;
}

#main-nav a:hover::after {
    width: 100%;
}

/* Banner样式 */
.banner {
    background: linear-gradient(135deg, #2c7dfa, #1a5dc8);
    color: #fff;
    padding: 80px 0;
    text-align: center;
}

.banner-content {
    max-width: 800px;
    margin: 0 auto;
    padding-bottom: 30px;
}

.banner-content h2 {
    font-size: 36px;
    margin-bottom: 20px;
}

.banner-content p {
    font-size: 18px;
    margin-bottom: 30px;
}

.search-box {
    display: flex;
    max-width: 500px;
    margin: 0 auto;
}

.search-box input {
    flex: 1;
    padding: 12px 15px;
    border: none;
    border-radius: 4px 0 0 4px;
    font-size: 16px;
}

.search-box button {
    padding: 12px 25px;
    background-color: #ff6b6b;
    color: #fff;
    border: none;
    border-radius: 0 4px 4px 0;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.search-box button:hover {
    background-color: #ff5252;
}

.banner-image {
    max-width: 600px;
    margin: 0 auto;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

/* 章节标题样式 */
.section-header {
    text-align: center;
    margin-bottom: 40px;
}

.section-header h2 {
    font-size: 32px;
    color: #2c7dfa;
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: #2c7dfa;
}

.section-header p {
    font-size: 18px;
    color: #666;
}

/* 卡片样式 */
.card-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
    gap: 25px;
}

.card {
    background-color: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

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

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all 0.5s ease;
}

.card:hover .card-image img {
    transform: scale(1.05);
}

.card-content {
    padding: 20px;
}

.card-content h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: #333;
}

.card-content p {
    font-size: 14px;
    color: #666;
    margin-bottom: 15px;
    height: 45px;
    overflow: hidden;
}

/* 文章样式 */
.article-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(500px, 1fr));
    gap: 30px;
}

.article-item {
    background-color: #fff;
    border-radius: 8px;
    padding: 25px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.article-item h3 {
    font-size: 20px;
    color: #2c7dfa;
    margin-bottom: 15px;
}

.article-item p {
    font-size: 16px;
    line-height: 1.7;
    color: #444;
}

/* 页脚样式 */
#footer {
    background-color: #222;
    color: #fff;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.footer-logo p:first-child {
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 10px;
}

.footer-logo p:last-child {
    color: #aaa;
}

.footer-nav h3,
.footer-category h3,
.footer-contact h3 {
    font-size: 18px;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-nav h3::after,
.footer-category h3::after,
.footer-contact h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background-color: #2c7dfa;
}

.footer-nav ul,
.footer-category ul {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 10px;
}

.footer-nav a,
.footer-category a {
    color: #aaa;
    font-size: 14px;
}

.footer-nav a:hover,
.footer-category a:hover {
    color: #2c7dfa;
}

.footer-contact p {
    margin-bottom: 10px;
    color: #aaa;
    font-size: 14px;
}

.footer-bottom {
    border-top: 1px solid #444;
    padding-top: 20px;
    text-align: center;
}

.footer-bottom p {
    font-size: 14px;
    color: #aaa;
    margin-bottom: 5px;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .banner-content h2 {
        font-size: 30px;
    }
    
    .section-header h2 {
        font-size: 28px;
    }
    
    .article-container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    #main-nav ul {
        flex-direction: column;
        align-items: center;
    }
    
    #main-nav li {
        margin: 5px 0;
    }
    
    .banner {
        padding: 50px 0;
    }
    
    .banner-content h2 {
        font-size: 26px;
    }
    
    .search-box {
        flex-direction: column;
    }
    
    .search-box input,
    .search-box button {
        width: 100%;
        border-radius: 4px;
    }
    
    .search-box button {
        margin-top: 10px;
    }
    
    .section {
        padding: 40px 0;
    }
    
    .card-container {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    }
}

@media (max-width: 576px) {
    .logo h1 {
        font-size: 20px;
    }
    
    .banner-content h2 {
        font-size: 22px;
    }
    
    .banner-content p {
        font-size: 16px;
    }
    
    .section-header h2 {
        font-size: 24px;
    }
    
    .section-header p {
        font-size: 16px;
    }
    
    .card-container {
        grid-template-columns: 1fr;
    }
}