:root{--bg:#f6f7f9;--fg:#1d2330;--muted:#5f6b7a;--card:#fff;--border:#d9dee5;--accent:#215caf;--error:#b42318;color:var(--fg);background:var(--bg);font-family:system-ui,-apple-system,Segoe UI,sans-serif}body{background:var(--bg);margin:0}header{background:var(--card);border-bottom:1px solid var(--border);align-items:center;gap:12px;padding:10px 16px;display:flex}.spacer{flex:1}.demo-tag{color:var(--muted);border:1px solid var(--border);border-radius:4px;padding:2px 6px;font-size:12px}main{max-width:1100px;margin:0 auto;padding:24px 16px}.card{background:var(--card);border:1px solid var(--border);border-radius:8px;padding:16px 20px}.login{flex-direction:column;gap:12px;max-width:320px;margin:40px auto;display:flex}.login label{flex-direction:column;gap:4px;font-size:14px;display:flex}input,select{font:inherit;border:1px solid var(--border);border-radius:4px;padding:6px 8px}button{font:inherit;border:1px solid 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