:root{--bg: #f6f7f7;--card: #ffffff;--line: #e3e7e5;--text: #1d2b27;--muted: #6b7770;--brand: #0e3d33;--accent: #15604e;--copper: #b9772f;--bad: #c0392b;--warn: #c2871f;--good: #1f9d57}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--text);background:var(--bg);font-size:14px}h1{font-size:20px;margin:0 0 12px;color:var(--brand)}h2{font-size:17px;margin:0 0 8px;color:var(--brand)}h3{font-size:14px;margin:0 0 8px;text-transform:uppercase;letter-spacing:.03em;color:var(--muted)}h4{font-size:13px;margin:10px 0 4px}.muted{color:var(--muted)}.small{font-size:12px}.center{text-align:center}.error{color:var(--bad);background:#fdecec;border:1px solid #f5c6c6;padding:6px 10px;border-radius:6px;margin:8px 0}.error.small{padding:4px 8px}button{font:inherit;background:var(--accent);color:#fff;border:none;border-radius:6px;padding:7px 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