/* 色彩系统 */
:root {
    --text: #000;
    --text-secondary: #888;
    --bg: #FFF;
    --bg-light: #F0F0F0;
    --border: #EEE;
}

/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--text);
    background-color: var(--bg);
    max-width: 800px;
    margin: 0 auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* 左上角返回主页按钮 */
.home-link {
    position: flowed;
    top: 16px;
    left: 16px;
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    border-radius: 50%;
    z-index: 100;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all 0.3s ease;
}

.home-link svg {
    width: 40px;
    height: 40px;
    transition: all 0.3s ease;
}


/* 主内容区 */
main {
    margin-top: 16px;
    padding: 16px 0;
    flex: 1;
}

/* 间距系统 */
.section {
    margin-bottom: 32px;
}

.section-title {
    font-size: 1.5rem;
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
}

/* 博客列表 */
.blog-list {
    list-style: none;
}

.blog-item {
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}

.blog-title {
    font-weight: 500;
    margin-bottom: 4px;
}

.blog-date {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* 项目卡片 */
.project-card {
    background-color: var(--bg-light);
    padding: 16px;
    margin-bottom: 16px;
}

/* 页脚 */
footer {
    margin-top: 32px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

footer a {
    color: var(--text);
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

/* 响应式设计 */
@media (max-width: 600px) {
    body {
        padding: 8px;
    }
    
    nav {
        gap: 16px;
        padding: 12px 0;
    }
    
    main {
        margin-top: 70px;
    }
}