body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.7;margin:0;color:#222;background:#fafafa}.wrap{max-width:920px;margin:auto;padding:2rem;background:white}a{color:#0b65c2}table{border-collapse:collapse;width:100%}td,th{border:1px solid #ddd;padding:.5rem;vertical-align:top}.meta{background:#f4f7fb;padding:1rem;border-radius:8px}img{max-width:100%;height:auto}pre{white-space:pre-wrap}.article{font-size:18px}.nav{margin:1rem 0}.muted{color:#666}