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

/* 变量定义 */
:root {
    --color-background: #F4F0E8;
    --color-primary: #6C5CE7;
    --color-accent: #FFC107;
    --color-text: #333333;
    --font-title: 'Roboto Mono', monospace;
    --font-body: 'Lora', serif;
}

/* 全局字体与背景 */
body {
    font-family: var(--font-body);
    background: linear-gradient(135deg, var(--color-background), #D9EAD3);
    color: var(--color-text);
    line-height: 1.6;
    padding: 20px;
}

/* 头部样式 */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

header h1 {
    font-family: var(--font-title);
    font-size: 2em;
    color: var(--color-primary);
}

nav ul {
    list-style: none;
    display: flex;
    gap: 15px;
}

nav a {
    text-decoration: none;
    color: var(--color-text);
    position: relative;
}

nav a::after {
    content: '';
    display: block;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: width 0.3s;
    position: absolute;
    bottom: -5px;
    left: 0;
}

nav a:hover::after {
    width: 100%;
}

/* 主内容区域 */
.main {
    display: flex;
    flex-direction: column;
    gap: 50px;
}

.section {
    padding: 50px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.8);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.section:nth-child(even) {
    background: rgba(108, 92, 231, 0.1);
}

.section h2 {
    font-family: var(--font-title);
    font-size: 1.8em;
    margin-bottom: 20px;
    color: var(--color-primary);
}

.section p {
    margin-bottom: 15px;
}

.section img {
    width: 100%;
    max-width: 320px;
    height: auto;
    border-radius: 5px;
}

.highlight {
    color: var(--color-primary);
    font-weight: bold;
}

.call-to-action {
    background-color: var(--color-accent);
    color: white;
    padding: 10px 20px;
    border-radius: 5px;
    text-decoration: none;
    transition: background 0.3s;
}

.call-to-action:hover {
    background-color: darken(var(--color-accent), 10%);
}

/* 示例数据展示 */
.example-section {
    background: linear-gradient(135deg, #F4F0E8, #D9EAD3);
    padding: 30px;
    border: 2px dashed var(--color-primary);
    border-radius: 10px;
}

.example-section h3 {
    font-family: var(--font-title);
    color: var(--color-primary);
    margin-bottom: 15px;
}

.example-section pre {
    background: #f5f5f5;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
}

.example-section code {
    font-family: 'Courier New', Courier, monospace;
    color: #d14;
}

/* 响应式设计 */
@media (max-width: 1440px) {
    .section {
        padding: 40px;
    }
}

@media (max-width: 1200px) {
    header {
        flex-direction: column;
        align-items: flex-start;
    }
    nav ul {
        flex-direction: column;
        gap: 10px;
    }
}

@media (max-width: 1024px) {
    .main {
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 30px;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.5em;
    }
    nav ul {
        flex-direction: column;
        gap: 8px;
    }
    .section h2 {
        font-size: 1.5em;
    }
}

@media (max-width: 320px) {
    body {
        padding: 10px;
    }
    .section {
        padding: 20px;
    }
    .call-to-action {
        padding: 8px 16px;
    }
}