:root{--bg-base: #0d1117;--bg-surface: #161b22;--bg-elevated: #21262d;--border: #30363d;--text-primary: #e6edf3;--text-muted: #8b949e;--accent: #2f81f7;--success: #3fb950;--warning: #d29922;--danger: #f85149;--radius: 10px;--font: Inter, system-ui, -apple-system, "Segoe UI", sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg-base);color:var(--text-primary);font-family:var(--font);font-size:14px}a{color:var(--accent);text-decoration:none}button{font-family:inherit;cursor:pointer}.btn{background:var(--accent);color:#fff;border:0;border-radius:6px;padding:8px 14px;font-size:14px}.btn.secondary{background:var(--bg-elevated);border:1px solid var(--border);color:var(--text-primary)}.btn:disabled{opacity:.5;cursor:not-allowed}.card{background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px}.input{background:var(--bg-base);border:1px solid var(--border);border-radius:6px;padding:8px 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