:root { --fg: #1f2937; --muted: #6b7280; --accent: #1d4ed8; --bg: #ffffff; --soft: #f3f4f6; }
* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; color: var(--fg); background: var(--bg); line-height: 1.7; }
.wrap { max-width: 720px; margin: 0 auto; padding: 0 20px; }
.site-header { border-bottom: 1px solid #e5e7eb; background: #fff; }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.brand { font-weight: 700; font-size: 1.15rem; color: var(--fg); text-decoration: none; }
nav a { margin-left: 18px; color: var(--muted); text-decoration: none; }
nav a:hover { color: var(--accent); }
.hero { padding: 40px 0 10px; }
.hero h1 { font-size: 2rem; margin: 0 0 10px; }
.post { border-top: 1px solid #e5e7eb; padding: 18px 0; }
.post h3 { margin: 0 0 4px; font-size: 1.2rem; }
.post h3 a { color: var(--fg); text-decoration: none; }
.post h3 a:hover { color: var(--accent); }
.meta { color: var(--muted); font-size: 0.85rem; margin: 0 0 8px; }
.site-footer { margin-top: 40px; background: var(--soft); padding: 18px 0; color: var(--muted); font-size: 0.9rem; }
.article h1 { font-size: 1.8rem; }
pre { background: #111827; color: #e5e7eb; padding: 14px; border-radius: 8px; overflow-x: auto; font-size: 0.85rem; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }