/* 全局样式设置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 设置主体字体和背景色，主色调深蓝色，辅色亮橙色，点缀色翠绿色 */
body {
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #1E3A8A 70%, #F97316 25%, #10B981 5%);
    color: #FFFFFF;
    line-height: 1.6;
    padding: 20px;
}

/* 设置容器，使用响应式网格布局 */
.container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

/* 标题样式 */
h1, h2, h3, h4 {
    color: #FFFFFF;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

h1 {
    font-size: 28px;
    margin-bottom: 20px;
}

h2 {
    font-size: 24px;
    margin-bottom: 15px;
}

h3 {
    font-size: 20px;
    margin-bottom: 10px;
}

h4 {
    font-size: 18px;
    margin-bottom: 8px;
}

/* 段落样式 */
p {
    font-size: 16px;
    margin-bottom: 15px;
    color: #F5F5F5;
}

/* 提示文字样式，突出显示 */
.prompt {
    background-color: rgba(255, 165, 0, 0.2);
    padding: 15px;
    border-left: 5px solid #FFA500;
    margin-bottom: 20px;
    font-size: 18px;
    font-weight: bold;
}

/* 图片样式，圆角、阴影和过渡效果 */
img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

img:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

/* 代码块样式 */
pre {
    background-color: rgba(0, 0, 0, 0.7);
    padding: 20px;
    border-radius: 8px;
    overflow: auto;
    position: relative;
}

pre::before {
    content: '代码示例';
    position: absolute;
    top: -20px;
    left: 10px;
    background-color: #1E3A8A;
    padding: 5px 10px;
    border-radius: 5px;
    font-size: 14px;
    color: #FFFFFF;
}

code {
    color: #F97316;
    font-family: 'Courier New', Courier, monospace;
    font-size: 16px;
}

/* 按钮样式，悬停和点击效果 */
.button {
    display: inline-block;
    background-color: #F97316;
    color: #FFFFFF;
    padding: 12px 25px;
    border: none;
    border-radius: 5px;
    text-decoration: none;
    font-size: 16px;
    transition: background-color 0.3s ease, transform 0.2s ease;
    cursor: pointer;
}

.button:hover {
    background-color: #EA580C;
    transform: scale(1.05);
}

.button:active {
    transform: scale(0.95);
}

/* 导航栏样式，固定在顶部 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(30, 58, 138, 0.9);
    color: #FFFFFF;
    padding: 15px 20px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar a {
    color: #FFFFFF;
    text-decoration: none;
    margin-left: 15px;
    transition: color 0.3s ease;
}

.navbar a:hover {
    color: #FFA500;
}

/* 主内容区域，避免导航栏遮挡 */
.main-content {
    margin-top: 80px;
}

/* 模块化设计，独立成块 */
.module {
    background-color: rgba(255, 255, 255, 0.1);
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.module:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

/* 折叠区域样式 */
.collapsible {
    background-color: rgba(30, 58, 138, 0.8);
    color: #FFFFFF;
    cursor: pointer;
    padding: 10px 15px;
    width: 100%;
    border: none;
    text-align: left;
    outline: none;
    font-size: 18px;
    border-radius: 5px;
    margin-top: 10px;
    transition: background-color 0.3s ease;
}

.collapsible:hover {
    background-color: rgba(30, 58, 138, 1);
}

.content {
    padding: 0 15px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 0 0 5px 5px;
}

/* 响应式设计，适配不同屏幕宽度 */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        align-items: flex-start;
    }

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

    h1 {
        font-size: 24px;
    }

    h2 {
        font-size: 20px;
    }
}

@media (max-width: 480px) {
    body {
        padding: 10px;
    }

    .button {
        padding: 10px 20px;
        font-size: 14px;
    }

    .collapsible {
        font-size: 16px;
        padding: 8px 12px;
    }
}

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

.fade-in {
    animation: fadeIn 1s ease-in-out;
}

/* 链接样式，添加 nofollow 属性 */
a[rel="nofollow"] {
    color: #FFA500;
    text-decoration: underline;
}