/* 基础样式 */
body {
    margin: 0;
    padding: 0;
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #00008B, #9400D3);
    color: #ffffff;
    line-height: 1.6;
}

/* 容器 */
.container {
    display: flex;
    flex-direction: column;
    padding: 20px;
    max-width: 1440px;
    margin: 0 auto;
}

/* 头部样式 */
header {
    text-align: center;
    padding: 60px 20px;
    background: rgba(0, 0, 0, 0.7);
    position: relative;
}
header h1 {
    font-size: 48px;
    color: #FFD700;
    text-shadow: 2px 2px #9400D3;
    transition: transform 0.3s;
}
header h1:hover {
    transform: scale(1.05);
}

/* 主导航 */
nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 200px;
    height: 100%;
    background: rgba(20, 20, 20, 0.9);
    padding-top: 100px;
    box-sizing: border-box;
}
nav a {
    display: block;
    padding: 15px 20px;
    color: #ffffff;
    text-decoration: none;
    transition: background 0.3s;
}
nav a:hover {
    background: #9400D3;
}
@media (max-width: 1024px) {
    nav {
        width: 100%;
        height: auto;
        position: relative;
    }
    .container {
        margin-left: 0;
    }
}

/* 主内容区域 */
main {
    margin-left: 220px;
    padding: 20px;
    box-sizing: border-box;
    background: rgba(0, 0, 0, 0.5);
}
@media (max-width: 1024px) {
    main {
        margin-left: 0;
    }
}

/* 标题与段落 */
h2, h3, h4 {
    color: #FFD700;
}
p, ul {
    font-size: 18px;
}
ul {
    list-style: disc inside;
}

/* 图片样式 */
img {
    width: 100%;
    max-width: 320px;
    height: auto;
    margin: 10px 0;
    border-radius: 10px;
}
.image-group {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

/* 代码块样式 */
pre {
    background: #1e1e1e;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
    margin: 20px 0;
}
code {
    color: #00FF00;
    font-family: 'Courier New', Courier, monospace;
}

/* 互动效果 */
.hover-effect {
    transition: transform 0.3s ease, opacity 0.3s ease;
}
.hover-effect:hover {
    transform: scale(1.1);
    opacity: 0.8;
}

/* 样例数据展示 */
.sample-data {
    border: 2px solid #FFD700;
    padding: 20px;
    border-radius: 10px;
    margin: 40px 0;
    background: rgba(255, 215, 0, 0.1);
}
.sample-data h2 {
    text-align: center;
    margin-bottom: 20px;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    header h1 {
        font-size: 40px;
    }
    main {
        padding: 15px;
    }
}
@media (max-width: 768px) {
    header h1 {
        font-size: 32px;
    }
    p, ul {
        font-size: 16px;
    }
}
@media (max-width: 480px) {
    header h1 {
        font-size: 24px;
    }
    nav {
        display: none;
    }
    main {
        margin-left: 0;
    }
}