/* 基本样式 */
body {
    margin: 0;
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #000428, #004e92);
    color: #ffffff;
    overflow-x: hidden;
}

.container {
    display: flex;
    min-height: 100vh;
}

/* 侧边栏 */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 200px;
    height: 100%;
    background: rgba(18, 18, 18, 0.9);
    padding-top: 60px;
    box-shadow: 2px 0 5px rgba(0,0,0,0.5);
    transition: all 0.3s ease;
}

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

.sidebar nav ul li {
    margin: 20px 0;
}

.sidebar nav ul li a {
    color: #00ffff;
    text-decoration: none;
    font-size: 18px;
    padding: 10px 20px;
    display: block;
    transition: background 0.3s, color 0.3s;
}

.sidebar nav ul li a:hover {
    background: #00ffff;
    color: #000428;
    border-radius: 4px;
}

/* 主内容 */
.main-content {
    margin-left: 200px;
    padding: 20px 40px;
    flex: 1;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
}

section {
    padding: 60px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

section:last-of-type {
    border-bottom: none;
}

h2, h3 {
    font-family: 'Open Sans', sans-serif;
    color: #00ffff;
}

p {
    line-height: 1.6;
    font-size: 16px;
    color: #e0e0e0;
}

pre {
    background: rgba(0, 0, 0, 0.7);
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
}

code {
    color: #ffcc00;
    font-family: 'Roboto Mono', monospace;
}

/* 示例数据展示 */
.demo-data {
    background: linear-gradient(135deg, #2c3e50, #4ca1af);
    padding: 40px;
    border-radius: 8px;
    margin-top: 40px;
}

.demo-data h2 {
    text-align: center;
    margin-bottom: 30px;
}

.demo-item {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.demo-item img {
    width: 80px;
    height: 80px;
    border-radius: 8px;
    margin-right: 20px;
}

.demo-item p {
    flex: 1;
}

/* 提示信息 */
.footer-note {
    text-align: center;
    padding: 20px 0;
    font-size: 14px;
    color: #cccccc;
}

/* 响应式设计 */
@media (max-width: 1440px) {
    .sidebar {
        width: 180px;
    }
    .main-content {
        margin-left: 180px;
        padding: 20px 30px;
    }
}

@media (max-width: 1200px) {
    .sidebar {
        width: 160px;
    }
    .main-content {
        margin-left: 160px;
        padding: 20px 20px;
    }
}

@media (max-width: 1024px) {
    .sidebar {
        width: 140px;
    }
    .main-content {
        margin-left: 140px;
    }
    h2 {
        font-size: 24px;
    }
}

@media (max-width: 768px) {
    .container {
        flex-direction: column;
    }
    .sidebar {
        position: relative;
        width: 100%;
        height: auto;
        box-shadow: none;
    }
    .main-content {
        margin-left: 0;
        padding: 20px;
    }
    .demo-item {
        flex-direction: column;
        align-items: flex-start;
    }
    .demo-item img {
        margin-bottom: 10px;
    }
}

@media (max-width: 480px) {
    .sidebar nav ul li a {
        font-size: 16px;
        padding: 8px 16px;
    }
    h2 {
        font-size: 20px;
    }
    p {
        font-size: 14px;
    }
}

@media (max-width: 320px) {
    .sidebar nav ul li a {
        font-size: 14px;
        padding: 6px 12px;
    }
    h2 {
        font-size: 18px;
    }
    p {
        font-size: 12px;
    }
}