:root{--ink:#16202e;--body:#2a3441;--muted:#4a5462;--line:#d7dce4;--accent:#0f5e63;--bg:#e3e7ee;--panel:#f6f7f9}*{box-sizing:border-box}html,body{margin:0;padding:0}body{color:var(--ink);background:var(--bg);font:14px/1.45 system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}.topbar{background:var(--ink);color:#fff;justify-content:space-between;align-items:center;padding:10px 20px;display:flex}.brand-mini{align-items:center;gap:10px;font-size:16px;display:flex}.brand-mini .tag{color:#c3ccd6;margin-left:4px;font-size:12px;font-weight:400}.mono-sq{background:var(--accent);color:#fff;border-radius:7px;place-items:center;width:28px;height:28px;font:700 15px Georgia,Times New Roman,serif;display:inline-grid}.btn{color:var(--ink);cursor:pointer;background:#fff;border:1px solid #b9c1cc;border-radius:7px;padding:9px 13px;font:600 13px/1 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