:root{--bg: #f7f8f8;--fg: #14211f;--muted: #5b6b68;--line: #dbe2e0;--card: #fff;--accent: #0f766e;--warn: #b45309;--bad: #b91c1c;font-family:system-ui,-apple-system,Segoe UI,sans-serif;color:var(--fg);background:var(--bg)}@media (prefers-color-scheme: dark){:root{--bg: #0f1514;--fg: #e6efed;--muted: #94a8a4;--line: #243230;--card: #16201e;--accent: #2dd4bf;--warn: #fbbf24;--bad: #f87171}}*{box-sizing:border-box}body{margin:0;line-height:1.5}.shell{max-width:900px;margin:0 auto;padding:1rem}header{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.5rem;border-bottom:1px solid var(--line);padding-bottom:.75rem}h1{font-size:1.25rem;margin:0}h2{font-size:1.05rem;margin:1.5rem 0 .5rem}nav{display:flex;gap:1rem}nav a{color:var(--muted);text-decoration:none;padding:.25rem 0}nav a.active{color:var(--accent);border-bottom:2px solid var(--accent)}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid 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