/* Option 2: System fonts, ultra-clean */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
    line-height: 1.7;
    color: #24292e;
    background: #fff;
    max-width: 700px;
    margin: 0 auto;
    padding: 60px 30px;
}

header {
    margin-bottom: 80px;
}

header nav {
    margin-top: 12px;
}

.back-link {
    color: #586069;
    text-decoration: none;
    font-size: 14px;
}

.back-link:hover {
    color: #24292e;
    text-decoration: underline;
}

.home-link {
    color: #24292e;
    text-decoration: none;
    font-size: 18px;
    font-weight: 600;
}

.home-link:hover {
    text-decoration: underline;
}

article {
    margin-bottom: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid #e1e4e8;
}

article:last-child {
    border-bottom: none;
}

article h2 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 4px;
}

article h2 a {
    color: #24292e;
    text-decoration: none;
}

article h2 a:hover {
    color: #0366d6;
}

article time {
    display: block;
    color: #586069;
    font-size: 14px;
    margin-bottom: 12px;
}

article p {
    color: #586069;
    font-size: 16px;
    line-height: 1.6;
}