/* 主要布局样式 */
body {
    margin: 0;
    padding: 0;
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #1e3c72, #2a5298);
    color: #ffffff;
}

/* 顶部导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.3);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 30px;
    backdrop-filter: blur(10px);
    z-index: 1000;
}

/* 导航链接样式 */
.navbar a {
    color: #ffffff;
    text-decoration: none;
    margin: 0 15px;
    font-size: 16px;
    transition: color 0.3s ease;
}

.navbar a:hover {
    color: #ffcc00;
}

/* 主要内容容器 */
.container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    padding: 100px 50px 50px 50px;
}

/* 卡片样式 */
.card {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 15px;
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    backdrop-filter: blur(10px);
    padding: 20px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: scale(1.05);
    box-shadow: 0 12px 40px 0 rgba(31, 38, 135, 0.5);
}

/* 图片样式 */
.card img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.card img:hover {
    transform: scale(1.1);
}

/* 文章标题样式 */
.article-title {
    font-size: 2em;
    color: #00aaff;
    margin-bottom: 20px;
}

/* 文章段落样式 */
.article-content {
    font-size: 16px;
    line-height: 1.6;
    color: #ffffff;
}

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

table th, table td {
    border: 1px solid #ffffff;
    padding: 10px;
    text-align: left;
}

table th {
    background-color: rgba(0, 170, 255, 0.3);
}

/* 代码块样式 */
pre {
    background: rgba(0, 0, 0, 0.5);
    padding: 15px;
    border-radius: 10px;
    overflow-x: auto;
}

code {
    color: #00ffcc;
    font-family: 'Courier New', Courier, monospace;
}

/* 固定导航样式 */
.fixed-nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.7);
    padding: 10px 0;
    z-index: 999;
}

/* 导航链接无follow属性 */
.nav-link {
    text-decoration: none;
    color: #ffffff;
    margin: 0 10px;
    font-size: 16px;
}

.nav-link:hover {
    color: #ffcc00;
}

/* 页面提示样式 */
.page-alert {
    background: rgba(255, 255, 255, 0.2);
    padding: 20px;
    text-align: center;
    font-size: 18px;
    border-radius: 10px;
    margin: 20px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        grid-template-columns: 1fr;
        padding: 100px 20px 20px 20px;
    }

    .navbar {
        flex-direction: column;
        align-items: flex-start;
    }

    .navbar a {
        margin: 10px 0;
    }
}

/* 动画效果 */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.fade-in {
    animation: fadeIn 2s ease-in;
}

/* 导航系统样式 */
.chapter-nav {
    position: fixed;
    right: 20px;
    top: 100px;
    background: rgba(255, 255, 255, 0.2);
    padding: 10px;
    border-radius: 10px;
}

.chapter-nav a {
    display: block;
    color: #ffffff;
    text-decoration: none;
    margin: 5px 0;
    transition: color 0.3s ease;
}

.chapter-nav a:hover {
    color: #ffcc00;
}

/* 装饰元素 */
.decorative-line {
    height: 2px;
    background: linear-gradient(90deg, #00aaff, #00ffaa);
    margin: 40px 0;
    border-radius: 5px;
}