/* ========== 全局样式 ========== */
body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* ========== 头部样式 ========== */
.header {
    background-color: #00a8e8;
    color: white;
    padding: 1rem 0;
    text-align: center;
}

.header h1 {
    margin: 0;
    font-size: 2rem;
}

/* ========== 侧边栏样式 ========== */
.sidebar {
    float: left;
    width: 25%;
    padding-right: 2rem;
}

.sidebar h3 {
    font-size: 1.2rem;
    margin-top: 2rem;
}

.sidebar ul {
    list-style: none;
    padding: 0;
}

.sidebar li {
    margin-bottom: 0.5rem;
}

/* ========== 主内容区样式 ========== */
.main-content {
    float: right;
    width: 70%;
    background-color: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.main-content h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.main-content h2 {
    font-size: 1.8rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.main-content p {
    margin-bottom: 1rem;
}

.main-content img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 1rem auto;
}

.main-content pre {
    background-color: #f9f9f9;
    padding: 1rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    overflow-x: auto;
    margin: 1.5rem 0;
}

/* ========== 夜间模式样式 ========== */
body.night-mode {
    background-color: #282c34;
    color: #d1d1d1;
}

body.night-mode .main-content {
    background-color: #2e3440;
}

body.night-mode .main-content h1,
body.night-mode .main-content h2 {
    color: #ffffff;
}

body.night-mode .main-content pre {
    background-color: #3b4252;
    color: #eceff4;
    border-color: #4c566a;
}

/* ========== 响应式设计 ========== */
@media (max-width: 768px) {
    .sidebar {
        display: none;
    }

    .main-content {
        width: 100%;
        float: none;
    }
}