:root {
    --bg: #fafaf7;
    --fg: #222;
    --muted: #777;
    --accent: #2a4d5e;
    --border: #e6e3da;
    --code-bg: #f1efe8;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--fg);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Helvetica, Arial, sans-serif;
    font-size: 17px;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}

.wrap {
    max-width: 680px;
    margin: 0 auto;
    padding: 48px 24px 80px;
}

header {
    margin-bottom: 56px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 16px;
}

header .logo {
    font-weight: 600;
    font-size: 20px;
    color: var(--fg);
    text-decoration: none;
    letter-spacing: -0.01em;
}

header nav a {
    color: var(--muted);
    text-decoration: none;
    margin-left: 18px;
    font-size: 15px;
}

header nav a:hover {
    color: var(--accent);
}

h1, h2, h3 { color: var(--fg); letter-spacing: -0.015em; line-height: 1.25; }
h1 { font-size: 28px; margin: 0 0 8px; }
h2 { font-size: 22px; margin: 36px 0 12px; }
h3 { font-size: 18px; margin: 28px 0 8px; }

p { margin: 0 0 16px; }

a {
    color: var(--accent);
    text-decoration: underline;
    text-decoration-color: rgba(42, 77, 94, 0.3);
    text-underline-offset: 3px;
}
a:hover { text-decoration-color: var(--accent); }

article.post-preview {
    padding: 20px 0;
    border-bottom: 1px solid var(--border);
}
article.post-preview:last-child { border-bottom: none; }
article.post-preview h2 { margin: 0 0 6px; font-size: 19px; }
article.post-preview h2 a { color: var(--fg); text-decoration: none; }
article.post-preview h2 a:hover { color: var(--accent); }
article.post-preview .meta { color: var(--muted); font-size: 14px; margin-bottom: 10px; }
article.post-preview p { color: var(--fg); margin: 0; font-size: 16px; }

.meta {
    color: var(--muted);
    font-size: 14px;
    margin-bottom: 32px;
}

.intro {
    color: var(--muted);
    margin-bottom: 36px;
    font-size: 16px;
}

code {
    background: var(--code-bg);
    padding: 2px 6px;
    border-radius: 3px;
    font-family: "SF Mono", Menlo, Monaco, "Courier New", monospace;
    font-size: 0.92em;
}

pre {
    background: var(--code-bg);
    padding: 16px 18px;
    border-radius: 5px;
    overflow-x: auto;
    line-height: 1.5;
    font-size: 14px;
    border-left: 3px solid var(--accent);
}

pre code { background: none; padding: 0; }

blockquote {
    border-left: 3px solid var(--border);
    margin: 16px 0;
    padding: 4px 18px;
    color: var(--muted);
    font-style: italic;
}

hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 48px 0;
}

footer {
    margin-top: 64px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    color: var(--muted);
    font-size: 14px;
    text-align: center;
}

@media (max-width: 600px) {
    body { font-size: 16px; }
    .wrap { padding: 32px 18px 60px; }
    header { flex-direction: column; align-items: flex-start; }
    header nav { margin-top: 8px; }
    header nav a { margin: 0 18px 0 0; }
}