* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    font-size: 12px;
    line-height: 1.5;
    color: #000;
    background: #fff;
    padding: 40px 20px;
}

.container {
    max-width: 650px;
    margin: 0 auto;
}

header {
    margin-bottom: 40px;
}

h1 {
    font-size: 18px;
    font-weight: normal;
    margin-bottom: 5px;
}

.tagline {
    font-size: 12px;
    color: #666;
    font-style: italic;
}

nav {
    margin-bottom: 40px;
}

nav a {
    font-size: 12px;
    color: #000;
    text-decoration: none;
    margin-right: 12px;
    border-bottom: 1px solid #000;
}

nav a:hover {
    border-bottom: 1px solid #666;
}

section {
    margin-bottom: 40px;
}

h2 {
    font-size: 14px;
    font-weight: normal;
    margin-bottom: 20px;
    font-style: italic;
}

h3 {
    font-size: 13px;
    font-weight: normal;
    margin-bottom: 3px;
}

h3 a {
    color: #000;
    text-decoration: none;
    border-bottom: 1px solid #000;
}

h3 a:hover {
    border-bottom: 1px solid #666;
}

p {
    margin-bottom: 10px;
    font-size: 12px;
}

.notebook-entry {
    margin-bottom: 30px;
}

.meta {
    font-size: 11px;
    color: #999;
    margin-bottom: 8px;
}

.tags {
    margin-top: 8px;
    margin-bottom: 8px;
}

.tag {
    display: inline-block;
    font-size: 10px;
    color: #666;
    background: #f5f5f5;
    padding: 2px 8px;
    border-radius: 3px;
    margin-right: 6px;
    margin-bottom: 4px;
}

.tag::before {
    content: '#';
    margin-right: 2px;
}

footer {
    margin-top: 60px;
    padding-top: 20px;
    border-top: 1px solid #ccc;
    font-size: 11px;
    color: #999;
}

footer p {
    font-size: 11px;
    margin-bottom: 3px;
}

/* Link styles */
a {
    color: #000;
}

/* Responsive */
@media (max-width: 600px) {
    body {
        padding: 20px 10px;
    }
}