/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
/* 设置全局字体和背景色 */
body {
    font-family: 'Roboto', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: #333333;
    background: linear-gradient(135deg, #0A2463 70%, #9D8189 25%, #3EB489 5%);
    padding-top: 80px; /* 为固定导航栏预留空间 */
}
/* 固定导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: #0A2463;
    color: #FFFFFF;
    padding: 20px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}
.navbar .logo {
    font-size: 1.5em;
    font-weight: bold;
}
.navbar .nav-links a {
    margin-left: 20px;
    text-decoration: none;
    color: #FFFFFF;
    transition: color 0.3s ease;
}
.navbar .nav-links a:hover {
    color: #FFA726;
}
/* 提示文字样式 */
.intro {
    text-align: center;
    padding: 40px 20px;
    background-color: rgba(245, 245, 245, 0.8);
    margin: 20px auto;
    max-width: 1200px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}
.intro h1 {
    font-size: 2em;
    margin-bottom: 20px;
    color: #0A2463;
}
.intro p {
    font-size: 1.2em;
    color: #333333;
}
/* 主内容区域布局 */
.container {
    display: grid;
    grid-template-columns: 1fr 3fr;
    gap: 40px;
    max-width: 1200px;
    margin: 40px auto;
    padding: 20px;
}
.sidebar {
    display: none;
}
.main-content {
    background-color: #FFFFFF;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}
/* 文章样式 */
article {
    max-width: 100%;
}
article h2, article h3 {
    color: #0A2463;
    margin-bottom: 15px;
}
article h2 {
    font-size: 2em;
    border-bottom: 2px solid #3EB489;
    padding-bottom: 10px;
}
article h3 {
    font-size: 1.5em;
    margin-top: 30px;
}
article p {
    margin-bottom: 20px;
    color: #555555;
}
/* 代码块样式 */
pre {
    background-color: #2D2D2D;
    color: #F8F8F2;
    padding: 15px;
    border-radius: 8px;
    overflow-x: auto;
    font-size: 0.9em;
    margin-bottom: 20px;
}
pre code {
    font-family: 'Courier New', Courier, monospace;
}
/* 强调文字 */
span {
    font-weight: bold;
}
/* 图片样式 */
img {
    width: 100%;
    max-width: 320px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    margin-bottom: 20px;
}
img:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 10px rgba(0, 0, 0, 0.3);
}
/* 表格样式 */
.table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
}
.table thead {
    background-color: #3EB489;
    color: #FFFFFF;
}
.table th, .table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #dddddd;
}
.table tbody tr:nth-child(even) {
    background-color: #f9f9f9;
}
/* 按钮样式 */
.button {
    background: linear-gradient(45deg, #3EB489, #FFA726);
    color: #FFFFFF;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.3s ease, transform 0.3s ease;
}
.button:hover {
    background: linear-gradient(45deg, #FFA726, #3EB489);
    transform: scale(1.05);
}
/* 底部样式 */
.footer {
    background-color: #0A2463;
    color: #FFFFFF;
    padding: 40px 20px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}
.footer .resources, .footer .languages {
    flex: 1 1 200px;
    margin: 10px;
}
.footer a {
    color: #3EB489;
    text-decoration: none;
    transition: color 0.3s ease;
}
.footer a:hover {
    color: #FFA726;
}
/* 响应式设计 */
@media (max-width: 1024px) {
    .container {
        grid-template-columns: 1fr 2fr;
    }
    .sidebar {
        display: block;
        background-color: #FFFFFF;
        padding: 20px;
        border-radius: 10px;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    }
}
@media (max-width: 768px) {
    .container {
        grid-template-columns: 1fr;
    }
    .sidebar {
        display: none;
    }
    .intro {
        padding: 20px;
    }
}
/* 动画效果 */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
.fade-in {
    animation: fadeIn 1s ease-in-out;
}
/* 下拉菜单样式 */
.nav-item {
    position: relative;
}
.dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: #FFFFFF;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    transition: opacity 0.3s ease, transform 0.3s ease;
    opacity: 0;
    transform: translateY(-10px);
}
.nav-item:hover .dropdown {
    display: block;
    opacity: 1;
    transform: translateY(0);
}
.dropdown a {
    display: block;
    padding: 10px 20px;
    color: #333333;
}
.dropdown a:hover {
    background-color: #F5F5F5;
}
/* 折叠区域样式 */
.collapsible {
    background-color: #F5F5F5;
    color: #0A2463;
    cursor: pointer;
    padding: 10px 20px;
    width: 100%;
    border: none;
    text-align: left;
    outline: none;
    font-size: 1em;
    transition: background-color 0.3s ease;
    margin-bottom: 10px;
    border-radius: 4px;
}
.collapsible:hover {
    background-color: #E0E0E0;
}
.content {
    padding: 0 20px;
    display: none;
    overflow: hidden;
    background-color: #FFFFFF;
    border-radius: 4px;
    margin-bottom: 20px;
}