/* Notion风格 - 简洁设计 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: #37352f;
    background-color: #ffffff;
    font-size: 16px;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 简洁头部导航 */
.header {
    background: #ffffff;
    border-bottom: 1px solid #e9e9e7;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1000px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 24px;
    height: 60px;
}

.logo h1 {
    color: #37352f;
    font-size: 22px;
    font-weight: 600;
    margin: 0;
}

.logo-subtitle {
    color: #9b9a97;
    font-size: 11px;
    font-weight: 400;
    display: block;
    margin-top: -2px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-menu a {
    color: #37352f;
    text-decoration: none;
    font-weight: 400;
    font-size: 14px;
    transition: color 0.2s ease;
    padding: 8px 0;
}

.nav-menu a:hover {
    color: #000000;
}

/* 主要内容区域 */
.main {
    margin-top: 60px;
}

/* 简洁英雄区域 */
.hero {
    background: #ffffff;
    padding: 120px 0 80px;
}

.hero-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 24px;
    text-align: center;
}

.hero-content {
    max-width: 600px;
    margin: 0 auto;
}

.hero-title {
    font-size: 48px;
    font-weight: 700;
    color: #000000;
    margin-bottom: 16px;
    line-height: 1.2;
    letter-spacing: -0.03em;
}

.hero-subtitle {
    font-size: 20px;
    color: #6f6e69;
    margin-bottom: 24px;
    font-weight: 400;
}

.hero-description {
    font-size: 16px;
    color: #6f6e69;
    margin-bottom: 48px;
    line-height: 1.6;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 24px;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
    font-size: 14px;
    transition: all 0.2s ease;
    display: inline-block;
    text-align: center;
    border: 1px solid transparent;
}

.btn-primary {
    background: #000000;
    color: #ffffff;
    border: 1px solid #000000;
}

.btn-primary:hover {
    background: #37352f;
    border-color: #37352f;
}

.btn-secondary {
    background: #ffffff;
    color: #37352f;
    border: 1px solid #e9e9e7;
}

.btn-secondary:hover {
    background: #f7f6f3;
    border-color: #d3d1cb;
}

/* 隐藏复杂的图形元素 */
.hero-image {
    display: none;
}

/* 简洁关于我们区域 */
.about {
    padding: 80px 0;
    background: #fafaf9;
}

.section-title {
    text-align: center;
    font-size: 32px;
    font-weight: 700;
    color: #000000;
    margin-bottom: 64px;
    letter-spacing: -0.02em;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 48px;
    max-width: 800px;
    margin: 0 auto;
}

.about-card {
    text-align: left;
    padding: 0;
    background: transparent;
    border-radius: 0;
    box-shadow: none;
    transition: none;
}

.about-card:hover {
    transform: none;
    box-shadow: none;
}

.card-icon {
    font-size: 24px;
    margin-bottom: 16px;
    display: block;
}

.about-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: #000000;
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}

.about-card p {
    color: #6f6e69;
    line-height: 1.6;
    font-size: 15px;
}

/* 简洁博客预览区域 */
.blog-preview {
    padding: 80px 0;
    background: #ffffff;
}

.blog-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
    max-width: 700px;
    margin: 0 auto;
}

.blog-card {
    background: #ffffff;
    border-radius: 0;
    padding: 32px 0;
    box-shadow: none;
    transition: none;
    border-bottom: 1px solid #e9e9e7;
}

.blog-card:last-child {
    border-bottom: none;
}

.blog-card:hover {
    transform: none;
    box-shadow: none;
}

.blog-category {
    display: inline-block;
    background: #f7f6f3;
    color: #6f6e69;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.blog-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: #000000;
    margin-bottom: 8px;
    line-height: 1.3;
    letter-spacing: -0.01em;
}

.blog-card p {
    color: #6f6e69;
    line-height: 1.6;
    margin-bottom: 16px;
    font-size: 15px;
}

.blog-meta {
    display: flex;
    justify-content: flex-start;
    align-items: center;
}

.blog-date {
    color: #9b9a97;
    font-size: 13px;
    font-weight: 400;
}

/* 简洁页脚 */
.footer {
    background: #fafaf9;
    color: #6f6e69;
    padding: 80px 0 32px;
    border-top: 1px solid #e9e9e7;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 48px;
    margin-bottom: 48px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.footer-section h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
    color: #000000;
}

.footer-section h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 12px;
    color: #37352f;
}

.footer-section p {
    color: #6f6e69;
    line-height: 1.5;
    margin-bottom: 8px;
    font-size: 14px;
}

.footer-bottom {
    border-top: 1px solid #e9e9e7;
    padding-top: 32px;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.footer-bottom p {
    color: #9b9a97;
    margin-bottom: 8px;
    font-size: 13px;
}

.footer-bottom a {
    color: #9b9a97;
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-bottom a:hover {
    color: #37352f;
    text-decoration: underline;
}

.footer-note {
    font-size: 13px;
    max-width: 600px;
    margin: 16px auto 0;
    line-height: 1.5;
    color: #9b9a97;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-container {
        padding: 0 16px;
        height: 56px;
    }
    
    .nav-menu {
        gap: 24px;
    }
    
    .nav-menu a {
        font-size: 14px;
    }
    
    .main {
        margin-top: 56px;
    }
    
    .container {
        padding: 0 16px;
    }
    
    .hero-container {
        padding: 0 16px;
    }
    
    .hero {
        padding: 80px 0 60px;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
    
    .hero-description {
        font-size: 15px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 8px;
    }
    
    .btn {
        width: 100%;
        max-width: 200px;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .blog-grid {
        gap: 24px;
    }
    
    .about,
    .blog-preview {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 28px;
        margin-bottom: 48px;
    }
    
    .footer {
        padding: 60px 0 24px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 32px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .section-title {
        font-size: 24px;
    }
}