/* 全局样式设定，应用流式布局和现代响应式设计 */
body {
    margin: 0;
    padding: 0;
    font-family: 'Arial', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    background: linear-gradient(135deg, #c1a192 70%, #6b8e23 25%, #ff69b4 5%);
    color: #333;
    transition: background 0.5s ease;
}

/* 固定导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(108, 142, 35, 0.9);
    padding: 15px 30px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* 导航链接样式 */
.navbar ul {
    list-style: none;
    display: flex;
    margin: 0;
    padding: 0;
}

.navbar li {
    margin-right: 20px;
    position: relative;
}

.navbar a {
    color: #fff;
    text-decoration: none;
    font-size: 16px;
    transition: color 0.3s ease;
}

.navbar a:hover {
    color: #ff69b4;
}

/* 多级菜单样式 */
.navbar ul ul {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: #6b8e23;
    padding: 10px 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.navbar li:hover > ul {
    display: block;
}

.navbar ul ul li {
    margin: 0;
    padding: 5px 20px;
}

.navbar ul ul a {
    font-size: 14px;
}

/* 侧边栏样式 */
.sidebar {
    position: fixed;
    left: -250px;
    top: 0;
    width: 250px;
    height: 100%;
    background: #556b2f;
    transition: left 0.3s ease;
    padding: 60px 20px;
    box-shadow: 2px 0 5px rgba(0,0,0,0.1);
}

.sidebar.open {
    left: 0;
}

/* 主容器样式，确保内容不被导航栏遮挡 */
.container {
    padding: 100px 20px 20px 20px;
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

/* 卡片样式，添加阴影和圆角，提升视觉层次感 */
.card {
    background: rgba(255, 255, 255, 0.8);
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 12px rgba(0,0,0,0.2);
}

/* 图片样式，添加圆角和悬停效果 */
.card img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    transition: transform 0.3s ease;
}

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

/* 文章标题样式 */
article h2 {
    font-size: 24px;
    color: #4b0082;
    margin-bottom: 10px;
}

article h3 {
    font-size: 20px;
    color: #2e8b57;
    margin-top: 20px;
    margin-bottom: 10px;
}

article p {
    font-size: 16px;
    margin-bottom: 15px;
}

/* 代码块样式，与正文区分开 */
pre {
    background: #f5f5f5;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
    margin-bottom: 15px;
}

code {
    font-family: 'Courier New', Courier, monospace;
    color: #d2691e;
}

/* 按钮样式，添加渐变和阴影 */
.button {
    background: linear-gradient(45deg, #ff69b4, #6b8e23);
    color: #fff;
    padding: 10px 20px;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.button:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 12px rgba(0,0,0,0.2);
}

/* 响应式设计，适配不同屏幕 */
@media (max-width: 768px) {
    .navbar ul {
        flex-direction: column;
        background: #6b8e23;
        position: absolute;
        top: 60px;
        left: 0;
        width: 100%;
        display: none;
    }

    .navbar ul.show {
        display: flex;
    }

    .navbar li {
        margin: 10px 0;
    }

    .container {
        grid-template-columns: 1fr;
    }
}

/* 动画效果，渐变背景 */
@keyframes gradientBackground {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

body {
    background-size: 200% 200%;
    animation: gradientBackground 15s ease infinite;
}

/* 提示信息样式 */
.prompt {
    text-align: center;
    font-size: 18px;
    color: #fff;
    background: rgba(0, 0, 0, 0.5);
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 20px;
}

/* 折叠区域样式 */
.details {
    margin-top: 10px;
}

.summary {
    cursor: pointer;
    color: #2e8b57;
    text-decoration: underline;
}

.summary:hover {
    color: #ff69b4;
}

/* 定制滚动条 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #555;
}

/* 页脚样式 */
footer {
    text-align: center;
    padding: 20px;
    background: #6b8e23;
    color: #fff;
    margin-top: 40px;
    box-shadow: 0 -2px 4px rgba(0,0,0,0.1);
}

/* 动态加载动画样式 */
.loader {
    border: 8px solid #f3f3f3;
    border-top: 8px solid #6b8e23;
    border-radius: 50%;
    width: 60px;
    height: 60px;
    animation: spin 2s linear infinite;
    margin: 0 auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}