:root{--fg:#1a1d21;--bg:#fff;--muted:#5b6270;--accent:#0b5fa5;--border:#e2e5ea;--card-bg:#f7f8fa}*{box-sizing:border-box}body,html{padding:0;margin:0}body{color:var(--fg);background:var(--bg);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.6}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.site-header{border-bottom:1px solid var(--border);padding:1.25rem 1.5rem}.site-header .brand{font-weight:700;font-size:1.1rem;color:var(--fg)}.site-header .tagline{color:var(--muted);font-size:.85rem;margin-top:.15rem}.site-footer{border-top:1px solid var(--border);padding:1.5rem;color:var(--muted);font-size:.8rem;margin-top:3rem}main{max-width:780px;margin:0 auto;padding:2rem 1.5rem}.index-list{list-style:none;padding:0;margin:1.5rem 0 0;display:grid;grid-gap:.6rem;gap:.6rem}.index-list li{border:1px solid var(--border);border-radius:8px;padding:.75rem 1rem;background:var(--card-bg)}.index-list a{font-weight:600}article h1{font-size:1.6rem;margin-bottom:.25rem}article .meta{color:var(--muted);font-size:.85rem;margin-bottom:1.5rem}article p{margin:0 0 1rem}.back-link{display:inline-block;margin-bottom:1.5rem;font-size:.9rem}.delimiter-block{border-left:3px solid var(--border);padding-left:.75rem;color:var(--muted);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.85rem;white-space:pre-wrap}