:root{--bg:#fff;--text:#111;--muted:#666}
html.dark{--bg:#111;--text:#eee;--muted:#aaa}
.site-tools,.hub-tools{display:flex;align-items:center;justify-content:space-between;gap:.75rem;margin:1rem 0 1.5rem}
.back-link,.rss-link{color:inherit;text-decoration:none}
.back-link:hover,.rss-link:hover{text-decoration:underline}
#theme-toggle{border:1px solid currentColor;background:transparent;color:inherit;border-radius:999px;padding:.35rem .7rem;font:inherit;cursor:pointer}
.reading-meta,.card-meta{color:var(--muted);font-size:.95rem;line-height:1.5;margin:.35rem 0 1rem}
.toc{border-left:2px solid #ddd;padding-left:1rem;margin:2rem 0}
.toc ul{margin:.5rem 0 0;padding-left:1rem}
.toc li+li{margin-top:.4rem}
.post-footer{color:var(--muted);font-size:.95rem;margin:1.25rem 0 0}
.post-footer a{color:inherit}