:root { --bg: #fafafa; --fg: #1a1a1a; --accent: #2563eb; --muted: #6b7280; --border: #e5e7eb; --card-bg: #fff; }
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--fg); line-height: 1.7; }
.container { max-width: 720px; margin: 0 auto; padding: 2rem 1.5rem; }
nav { border-bottom: 1px solid var(--border); padding: 1rem 0; margin-bottom: 2rem; }
nav a { color: var(--accent); text-decoration: none; font-weight: 600; }
nav a:hover { text-decoration: underline; }
h1 { font-size: 1.85rem; font-weight: 700; margin-bottom: 0.5rem; line-height: 1.25; }
h2 { font-size: 1.35rem; font-weight: 600; margin: 2rem 0 0.75rem; }
h3 { font-size: 1.1rem; font-weight: 600; margin: 1.5rem 0 0.5rem; }
p { margin-bottom: 1rem; }
ul, ol { padding-left: 1.5rem; margin-bottom: 1rem; }
li { margin-bottom: 0.4rem; }
code { background: #f3f4f6; padding: 0.15rem 0.4rem; border-radius: 3px; font-size: 0.9em; }
pre { background: #1e293b; color: #e2e8f0; padding: 1.25rem; border-radius: 6px; overflow-x: auto; margin-bottom: 1.5rem; font-size: 0.85rem; line-height: 1.5; }
pre code { background: none; padding: 0; color: inherit; }
.meta { color: var(--muted); font-size: 0.9rem; margin-bottom: 2rem; }
.cta { display: inline-block; background: var(--accent); color: #fff; padding: 0.6rem 1.25rem; border-radius: 6px; text-decoration: none; font-weight: 600; margin: 1rem 0; }
.cta:hover { opacity: 0.9; }
.post-list { list-style: none; padding: 0; }
.post-list li { border-bottom: 1px solid var(--border); padding: 1.25rem 0; }
.post-list a { color: var(--fg); text-decoration: none; font-size: 1.15rem; font-weight: 600; }
.post-list a:hover { color: var(--accent); }
.post-list .summary { color: var(--muted); font-size: 0.95rem; margin-top: 0.25rem; }
footer { text-align: center; color: var(--muted); font-size: 0.85rem; padding: 2rem 0 1rem; border-top: 1px solid var(--border); margin-top: 3rem; }
footer a { color: var(--accent); text-decoration: none; }
@media (max-width: 600px) { h1 { font-size: 1.4rem; } .container { padding: 1.5rem 1rem; } }