/* 全局样式设置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
/* 设置背景渐变和主色调 */
body {
    background: linear-gradient(135deg, #2c3e50, #1a1a1a);
    color: #ecf0f1;
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    font-size: 16px;
    transition: background 0.5s, color 0.5s;
}
/* 固定导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(26, 26, 26, 0.9);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 30px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.5);
    z-index: 1000;
}
.navbar a {
    color: #1abc9c;
    text-decoration: none;
    margin: 0 15px;
    font-size: 18px;
    transition: color 0.3s;
}
.navbar a:hover {
    color: #ecf0f1;
}
/* 章节导航样式 */
.chapter-nav {
    position: fixed;
    top: 80px;
    left: 20px;
    background-color: rgba(44, 62, 80, 0.9);
    padding: 20px;
    border-radius: 8px;
}
.chapter-nav a {
    display: block;
    color: #1abc9c;
    text-decoration: none;
    margin: 10px 0;
    font-size: 16px;
    transition: color 0.3s;
}
.chapter-nav a:hover {
    color: #ecf0f1;
}
/* 主要内容区域样式 */
.container {
    max-width: 1200px;
    margin: 120px auto 50px auto;
    padding: 20px;
    display: grid;
    grid-template-columns: 1fr 3fr;
    gap: 20px;
}
/* 文章内容样式 */
article {
    grid-column: 2 / 3;
}
article h2, article h3 {
    color: #3498db;
    margin-bottom: 15px;
}
article p {
    margin-bottom: 20px;
}
article pre {
    background-color: #34495e;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
    margin-bottom: 20px;
}
article code {
    color: #e74c3c;
    font-family: 'Courier New', Courier, monospace;
}
/* 图片样式 */
img.decorative {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.3);
    transition: transform 0.3s, box-shadow 0.3s;
}
img.decorative:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 16px rgba(0,0,0,0.5);
}
/* 提示信息样式 */
.notice {
    text-align: center;
    background-color: rgba(52, 152, 219, 0.8);
    color: #fff;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 40px;
    font-size: 20px;
    font-weight: bold;
}
/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        grid-template-columns: 1fr;
    }
    .chapter-nav {
        position: static;
        margin-bottom: 20px;
    }
}
/* 卡片式布局 */
.card {
    background-color: #2c3e50;
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.3);
    transition: transform 0.3s, box-shadow 0.3s;
}
.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 12px rgba(0,0,0,0.4);
}
/* 按钮样式 */
.button {
    background-color: #1abc9c;
    border: none;
    padding: 10px 20px;
    color: #ecf0f1;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s, transform 0.3s;
}
.button:hover {
    background-color: #16a085;
    transform: scale(1.05);
}
/* 阴影效果 */
.box-shadow {
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}
/* 代码块样式 */
.code-sample {
    background-color: #34495e;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
    margin-bottom: 20px;
}
.code-sample code {
    color: #e74c3c;
}
/* 过渡效果 */
.transition-effect {
    transition: all 0.3s ease-in-out;
}
/* 三维变换 */
.transform-3d {
    transform: perspective(600px) rotateY(10deg);
}
/* 文本阴影 */
.text-shadow {
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}
/* 定义关键帧动画 */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
.fade-in {
    animation: fadeIn 2s ease-in;
}