*{box-sizing:border-box;margin:0;padding:0}:root{--bg:#f8fafb;--bg-card:#fff;--bg-input:#fff;--bg-subtle:#f8fafb;--bg-accent:#e5f4f6;--text-primary:#1a2e2b;--text-secondary:#666;--text-muted:#999;--text-teal:#1f5f6b;--border:#d0dfe2;--border-teal:#7fbfca;--primary:#1f5f6b;--primary-light:#e5f4f6}[data-theme=dark]{--bg:#0f1f1e;--bg-card:#1a2e2b;--bg-input:#162422;--bg-subtle:#162422;--bg-accent:#1e3a36;--text-primary:#e5f4f6;--text-secondary:#9bbfc4;--text-muted:#6a9aa0;--text-teal:#4aafa0;--border:#2a4a46;--border-teal:#3a7a72;--primary:#4aafa0;--primary-light:#1e3a36}body{background:var(--bg);color:var(--text-primary);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;transition:background .2s,color .2s}.app{max-width:760px;margin:0 auto;padding:1.5rem}