:root{--bg:#fff;--fg:#1a1a1a;--muted:#666;--line:#e3e3e3;--accent:#c4161c;--chip:#f2f2f2}@media (prefers-color-scheme: dark){:root{--bg:#111;--fg:#eee;--muted:#9a9a9a;--line:#2a2a2a;--chip:#1d1d1d}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.45 system-ui,sans-serif;padding-bottom:80px}header{position:sticky;top:0;z-index:5;display:flex;align-items:baseline;gap:12px;padding:12px 16px;background:var(--bg);border-bottom:2px solid var(--fg)}h1{margin:0;flex:1;font:700 22px Georgia,serif}#count{color:var(--accent);font-weight:600;font-size:14px}#gear{background:none;border:0;color:var(--fg);font-size:20px;min-width:36px;min-height:36px}nav{display:flex;gap:20px;padding:8px 16px;border-bottom:1px solid var(--line);max-width:720px;margin:0 auto}nav a{color:var(--muted);text-decoration:none;font-size:14px;padding:4px 0;border-bottom:2px solid transparent}nav a.on{color:var(--fg);border-bottom-color:var(--accent)}main{max-width:720px;margin:0 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